Decorative cover plate display device

Abstract

The application discloses a kind of decorative cover display devices, including shell, the front of the shell is embedded with display panel, the two sides of the display panel are symmetrically provided with side edge, decorative cover is provided between the side edge, the front of the shell and the upper side edge of decorative cover opposite place is embedded with slot, the slot and the decorative cover sliding adaptation, the side surface of the side edge opposite is rotatably connected with rotating column, the one side of the rotating column is embedded with the square slot of the opening size and the opening size of the slot matching, the two sides of the decorative cover are symmetrically provided with the sliding square block of the square slot sliding adaptation.The decorative cover can be extracted from the slot and covered and protected on the display panel in ordinary times, and the degree of decorative cover pushing into the slot can be adjusted according to the irradiation of external sunlight when using.

Description

Technical Field

[0001] This invention relates to the field of automotive display screen technology, specifically a decorative cover plate display device. Background Technology

[0002] In the automotive industry, especially in the field of new energy vehicles, cars are becoming increasingly intelligent in their design, resulting in a growing number of screens inside the vehicles. However, not every piece of information is necessary, and sometimes useless information can even be distracting. When parked, unused screens are at risk of damage and are also susceptible to shortening their lifespan due to prolonged exposure to direct sunlight.

[0003] Chinese Patent Publication No. CN217821238U discloses a decorative cover plate for a display screen, belonging to the field of decorative cover plates. It includes a decorative cover plate body, an outer decorative layer installed on the outer wall of the body, four dust plug structures symmetrically installed on the inner wall of the outer decorative layer, two elastic retaining plate structures symmetrically installed on the inner wall of the outer decorative layer, and the decorative cover plate body having an arc-shaped structure. The body is fixed to the outer wall of the display screen by bolts. Four stud through holes are symmetrically opened on the inner wall of the body, and four nut storage slots are symmetrically opened on the outer wall of the body. The outer decorative layer is provided on the outer side of the decorative cover plate body.

[0004] In this scheme, the main body of the decorative cover is installed in a fixed manner, and its function is relatively simple, only serving the purposes of decoration and fixed protection.

[0005] Chinese Patent Publication No. CN220465394U discloses a connecting device for a vehicle display screen and a decorative cover plate, including a connecting seat and a connecting insert. The vehicle display screen is located on the front side of the rear cover of the vehicle display screen, the decorative cover plate is located on the rear side of the rear cover, the connecting seat is located on the rear side of the rear cover, a cavity is provided in the middle of the connecting seat, an opening is provided on the lower side of the connecting seat, and a notch is provided on the upper side of the connecting seat. The notch communicates with the outside and forms an upper and lower channel with the cavity. A step is provided on the connecting insert plate, and a rectangular through hole is provided on the connecting insert plate along its front and rear direction. An elastic hook is provided in the rectangular through hole, and the elastic hook includes an elastic arm and a wedge-shaped protrusion.

[0006] This solution addresses the aesthetic requirements of the gap between the vehicle display screen and the decorative cover, as well as the issue of frictional noise between the vehicle display screen and the decorative cover.

[0007] Chinese Patent Publication No. CN115437176A discloses a display structure and manufacturing method for a vehicle-mounted wood grain decorative cover plate, including a liquid crystal display module, a touch module mounted on the upper end of the liquid crystal display module, a trapezoidal wood grain cover plate module mounted on the upper end of the touch module, a thin film connected to the touch module, a wood grain-like film mounted on the upper end of the thin film, and a rectangular display area mounted on the upper end of the film.

[0008] In this design, the decorative cover plate serves only a protective and decorative purpose.

[0009] Therefore, in the current technology, the use of in-vehicle screens generally requires the use of decorative covers for decoration and protection. However, when using the screen while driving, due to the different directions of sunlight, the screen is easily reflected, which affects the viewing effect. Summary of the Invention

[0010] The purpose of this invention is to provide a decorative cover plate display device to solve the problems mentioned in the background art.

[0011] To achieve the above objectives, the present invention provides the following technical solution: A decorative cover display device includes a housing, a display panel embedded in the front of the housing, side edges symmetrically arranged on both sides of the display panel, a decorative cover plate disposed between the side edges, a slot embedded in the front of the housing and the upper edge of the decorative cover plate opposite to each other, the slot and the decorative cover plate being slidably adapted, a rotating column rotatably connected to the opposite side of the side edges, a square groove with an opening size matching the opening size of the slot embedded in one side of the rotating column, and sliding blocks symmetrically arranged on both sides of the decorative cover plate to slide and adapt to the square groove.

[0012] As a further aspect of the present invention: a torsion spring is connected between the rotating column and the side edge, and the torsion spring acts to make the square groove opening on the rotating column face the slot, and the square groove opening is flush with the edge of the slot.

[0013] As a further embodiment of the present invention: a third sliding groove is provided through the decorative cover plate on the side away from the sliding block, and a locking component is assembled and connected in the third sliding groove; a second sliding groove is embedded on the front side of the outer shell below the display panel, and a limiting rod corresponding to and adapted to the locking component is connected in the second sliding groove.

[0014] As a further aspect of the present invention: a gasket is embedded in the periphery of the display panel, and when the decorative cover plate covers the front of the display panel, the inner side of the decorative cover plate and the gasket are in contact.

[0015] As a further aspect of the present invention: the locking component is slidably connected in the third slide groove, and the locking component is embedded with a groove on the side facing the limiting rod, and the groove and the limiting rod are correspondingly adapted.

[0016] As a further aspect of the present invention: elastic baffles are slidably provided on both sides of the slot and opposite to the square slot, and a spring telescopic rod is connected to the elastic baffles and the slot. A first sliding groove is embedded on the upper side of the display panel on the outer shell. A limiting component is provided in the first sliding groove, and the end of the limiting component extending into the first sliding groove extends into the slot and is correspondingly adapted to the decorative cover.

[0017] As a further embodiment of the present invention: a strip groove is embedded in the bottom of the decorative cover plate, the end of the strip groove passes through one end of the decorative cover plate near the slot, and the strip groove extends radially. A toothed rack is provided on one side of the strip groove, and the toothed rack and the end of the limiting component are connected in cooperation.

[0018] As a further aspect of the present invention: the limiting component includes a rotating shaft rotatably connected in a slot, a sleeve slidably sleeved around the rotating shaft, the sleeve and the rotating shaft being splined together, the sleeve being able to rotate synchronously with the rotating shaft and being axially slidably adapted, a ratchet and a gear being fixedly connected side by side around the sleeve, a handle being fixedly connected to one side of the sleeve, and the end of the handle away from the sleeve passing through the first sliding groove.

[0019] As a further aspect of the invention: the radius of the gear is greater than the radius of the ratchet, and the gear extends upward from the bottom of the slot and meshes with the rack extending into the bottom of the decorative cover plate in the slot.

[0020] As a further embodiment of the present invention: a fixing ring is fixedly connected to the bottom of the slot, the fixing ring is located around the ratchet, and multiple sets of locking plates are rotatably connected to the inner wall of the fixing ring. The locking plates are connected to the inner wall of the fixing ring by torsion springs, and the locking plates are tilted by the torsion springs. The ends of the locking plates are engaged and adapted to the ratchet.

[0021] Compared with existing technologies, the advantages of this invention are as follows: In practical use, the decorative cover plate can be rotated on its side edge. The decorative cover plate rotates through the cooperation of a sliding block, a rotating column, and a square groove. When the decorative cover plate rotates to align with the slot, it can be pushed into the slot. This not only preserves the decorative cover plate but also shields the surface of the display panel. During use, the degree to which the decorative cover plate is pushed into the slot can be adjusted according to the amount of sunlight, thus improving ease of use. Furthermore, when not in use, the decorative cover plate can be removed from the slot and used to cover and protect the display panel, providing protection when not in use and preventing direct sunlight from damaging the display panel. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the present invention with the decorative cover plate removed.

[0024] Figure 3 for Figure 2 A magnified structural diagram of region A in the middle.

[0025] Figure 4 This is a schematic diagram of the decorative cover plate in the open state in this invention.

[0026] Figure 5 for Figure 4 A magnified structural diagram of region B in the middle.

[0027] Figure 6 This is a schematic diagram of the structure of the decorative cover plate in this invention.

[0028] Figure 7 for Figure 6 A magnified structural diagram of region C in the middle.

[0029] Figure 8 for Figure 6 A magnified structural diagram of region D in the middle.

[0030] Figure 9 This is a schematic diagram of the limiting component in this invention.

[0031] In the diagram: 1-Outer shell, 11-Side edge, 12-Display panel, 13-Rotating column, 14-Square groove, 15-Slot, 16-First slide groove, 17-Second slide groove, 18-Limiting rod, 19-Washer, 2-Decorative cover plate, 21-Third slide groove, 22-Sliding block, 23-Strip groove, 24-Rack, 3-Locking assembly, 4-Elastic baffle, 5-Limiting assembly, 51-Rotating shaft, 52-Sleeve, 53-Ratchet, 54-Gear, 55-Handle lever, 56-Fixing ring, 57-Clamping plate. Detailed Implementation

[0032] Please see Figures 1-6 In this embodiment of the invention, a decorative cover plate display device includes a housing 1. The housing 1 is preferably embedded and fixedly installed in the center console of a vehicle, with only one side of the front of the housing 1 exposed. A display panel 12 is embedded in the front of the housing 1. Side edges 11 are symmetrically arranged on both sides of the display panel 12. A decorative cover plate 2 is arranged between the side edges 11. A slot 15 is embedded at the opposite position of the front of the housing 1 and the upper edge of the decorative cover plate 2. The slot 15 and the decorative cover plate 2 are slidably adapted. A rotating column 13 is rotatably connected to the opposite side of the side edge 11. A square groove 14 with an opening size matching the opening size of the slot 15 is embedded in one side of the rotating column 13. Sliding blocks 22 that are slidably adapted to the square groove 14 are symmetrically arranged on both sides of the decorative cover plate 2.

[0033] In normal use, the decorative cover 2 preferably has a wood grain pattern on its surface. The decorative cover 2 covers the front of the outer shell 1, which is embedded in the center console. The display panel 12 is a commonly used in-vehicle tablet screen, typically connected to the vehicle's electrical system. The display panel 12 is easily controlled manually or via the center console. In actual use, the decorative cover 2 can be rotated on the side edge 11. The decorative cover 2 rotates through the cooperation of the sliding block 22, the rotating column 13, and the square groove 14. When the decorative cover 2 is rotated until its edge aligns with the slot 15, it can be pushed into the slot 15. This preserves the decorative cover 2 while also shielding the surface of the display panel 12. The degree to which the decorative cover 2 is pushed into the slot 15 can be adjusted according to the amount of sunlight, thus improving ease of use. Normally, the decorative cover 2 can be pulled out of the slot 15 and covered to protect the display panel 12. It can protect the display panel 12 when not in use and also prevent direct sunlight from damaging it.

[0034] A torsion spring connects the rotating column 13 and the side edge 11. The torsion spring causes the opening of the square groove 14 on the rotating column 13 to face the slot 15, and the opening of the square groove 14 is flush with the edge of the slot 15. In its natural state, the rotating column 13 and the square groove 14, through their interaction with the sliding block 22, can cause the decorative cover 2 to be perpendicular to the surface of the display panel 12. This facilitates natural and convenient occlusion and allows for easy alignment and insertion of the decorative cover 2 into the slot 15. The front dimensions of the decorative cover 2 and the outer casing 1 are compatible. When the decorative cover 2 covers the surface of the display panel 12, the torsion spring between the rotating column 13 and the side edge 11 is twisted. Therefore, a locking structure is needed between the decorative cover 2 and the outer casing 1 to position and lock their respective positions. A third sliding groove 21 is provided through the decorative cover plate 2 on the side away from the sliding block 22. A locking component 3 is assembled and connected in the third sliding groove 21. A second sliding groove 17 is embedded in the front of the outer shell 1 below the display panel 12. A limiting rod 18 corresponding to and adapted to the locking component 3 is connected in the second sliding groove 17. When the decorative cover plate 2 covers and protects the surface of the display panel 12, it can be fixed by the locking component 3 in the third sliding groove 21 and the limiting rod 18 in the second sliding groove 17. The locking component 3 can also be released from the limiting rod 18 to facilitate the rotation of the decorative cover plate 2 and its insertion into the slot 15 for adjustment.

[0035] Furthermore, a gasket 19 is embedded in the periphery of the display panel 12. When the decorative cover 2 covers the front of the display panel 12, the inner side of the decorative cover 2 is in contact with the gasket 19, thereby preventing dust and dirt.

[0036] like Figures 1-7 As shown, the locking component 3 is a columnar structure. It is slidably connected to the third slide groove 21. A groove is embedded in the side of the locking component 3 facing the limiting rod 18, and the groove and the limiting rod 18 are correspondingly matched. Preferably, a spring connects the locking component 3 and the third slide groove 21. The spring causes the locking component 3 to move in the opposite direction to the end of the third slide groove 21. When the decorative cover plate 2 is attached to the front of the display panel 12, the end of the locking component 3 extends into the second slide groove 17, and the groove on the locking component 3 engages with the limiting rod 18. When the locking component 3 is moved on the third slide groove 21, the engagement between the locking component 3 and the limiting rod 18 can be released. This structure is simple and convenient to operate, and the engagement is stable.

[0037] To improve the adjustability of the decorative cover plate 2 when it covers the display panel 12, elastic baffles 4 are slidably fitted on both sides of the slot 15 and opposite to the square groove 14. A spring telescopic rod (composed of a sleeve and a sliding rod fitted together, with a spring connecting the sleeve and the sliding rod) is connected to the elastic baffles 4 and the slot 15. A first sliding groove 16 is embedded on the upper side of the display panel 12 on the outer shell 1. A limiting component 5 is fitted in the first sliding groove 16. The end of the limiting component 5 extends into the slot 15 and is correspondingly adapted to the decorative cover plate 2. When the decorative cover 2 is pushed into the slot 15, it enters horizontally. The portion of the decorative cover 2 extending beyond the slot 15 provides sunshade. In cases of glare, the extended length of the decorative cover 2 can be adjusted to improve the usability of the display panel 12. As the decorative cover 2 is pushed into the slot 15, the spring-loaded telescopic rod connected to the elastic baffle 4 is elastically compressed. Simultaneously, the end of the limiting component 5 engages with the decorative cover 2, restricting its movement to one direction only, thus establishing a stable position for the decorative cover 2 within the slot 15. When it is necessary to remove the decorative cover 2 from the slot 15 to cover the display panel 12, the one-way movement restriction of the limiting component 5 can be removed, allowing the spring-loaded telescopic rod connected to the elastic baffle 4 to elastically push the decorative cover 2 out. The operation is simple, convenient, and has a fast response time.

[0038] Among them, such as Figures 6-9 As shown, a strip groove 23 is embedded in the bottom of the decorative cover plate 2. The end of the strip groove 23 extends through one end of the decorative cover plate 2 near the slot 15 and extends radially. A rack 24 is provided on one side of the strip groove 23, and the rack 24 is engaged with the end of the limiting component 5. In use, the end of the limiting component 5 first engages with the rack 24, creating a one-way movement effect for the decorative cover plate 2. When it is necessary to remove the decorative cover plate 2 from the slot 15, the limiting component 5 can be moved, and the end of the limiting component 5 can be moved from the rack 24 into the strip groove 23, thereby disengaging from the one-way limiting engagement with the decorative cover plate 2. The decorative cover plate 2 can then pop out. This allows the decorative cover plate 2 to either extend out of the slot 15 or pop out completely from the slot 15.

[0039] Preferably, the limiting component 5 includes a rotating shaft 51 rotatably connected in the slot 15. A sleeve 52 is slidably sleeved around the rotating shaft 51. The sleeve 52 and the rotating shaft 51 are connected by a spline or by a guide groove. The sleeve 52 can rotate synchronously with the rotating shaft 51 and slide axially. A ratchet 53 and a gear 54 are fixedly connected side by side around the sleeve 52. The radius of the gear 54 is larger than the radius of the ratchet 53, and the gear 54 extends upward from the bottom of the slot 15 and engages with the gear inserted into the slot 15. The toothed rack 24 at the bottom of the decorative cover plate 2 in the 5th layer is engaged. A fixing ring 56 is fixedly connected to the bottom of the slot 15. The fixing ring 56 is located around the ratchet 53. Multiple sets of locking plates 57 are rotatably connected to the inner wall of the fixing ring 56. The locking plates 57 are connected to the inner wall of the fixing ring 56 by a torsion spring. The torsion spring causes the locking plates 57 to be tilted. The end of the locking plates 57 is engaged with the ratchet 53. A handle 55 is fixedly connected to one side of the sleeve 52. The end of the handle 55 away from the sleeve 52 passes through the first slide groove 16. This design allows for convenient synchronous movement of the sleeve 52, ratchet 53, and gear 54 via the handle 55. When the decorative cover 2 enters the slot 15, its bottom moves against the lower surface of the slot 15, and the slot 23 and rack 24 move to the opposite position of the gear 54, meshing with each other. As the decorative cover 2 extends into the slot 15, the ratchet 53 can rotate relative to the locking plate 57, while reverse rotation locks it in place. To remove the decorative cover 2 from the slot 15, simply move the sleeve 52, ratchet 53, and gear 54 via the handle 55, moving the gear 54 into the slot 23. The overall operation is simple and convenient, the locking is stable and easy to position, and removing this unidirectional movement lock is also easy, simply by sliding the handle 55. Example 2

[0040] This embodiment further defines the dimensional, gap, angular, and proportional relationships among the decorative cover plate 2, slot 15, rack 24, gear 54, ratchet 53, clamping plate 57, and elastic baffle 4, so that the decorative cover plate 2 has more stable support, limiting, and release performance when extended in the sunshade state.

[0041] In this embodiment, the total length of the decorative cover plate 2 along the direction of being pushed into the slot 15 is L, the thickness of the decorative cover plate 2 is t, and the length of the decorative cover plate 2 extending outward from the slot 15 when it is in the sunshade holding state is L. o The effective insertion length of the decorative cover 2 into the slot 15 is L. i L o It is 0.35 to 0.58 times L, L i For Lo 0.70 to 1.20 times.

[0042] When L o When the length of the decorative cover plate 2 is less than 0.35 times L, the extension length is insufficient, resulting in limited sunshade effect; when L... o When the length is greater than 0.58 times L, the extended section of the decorative cover plate 2 is too long, which can easily amplify the overturning moment at the entrance of slot 15. i Less than L o When the length is 0.70 times the normal length, the support length for the decorative cover plate 2 within the slot 15 is insufficient, causing the decorative cover plate 2 to sag or wobble easily; L i Greater than L o When the length of the decorative cover 2 is 1.20 times that of the slot 15, the contact length of the decorative cover 2 is too large, increasing the resistance to pushing in and releasing.

[0043] In this embodiment, the height difference δ between the inner height of the slot 15 and the thickness t of the decorative cover plate 2 h The lateral gap δ formed on one side between the inner cavity width of slot 15 and the corresponding width of decorative cover plate 2 is 0.06 to 0.15 times t. w It is 0.04 to 0.10 times t. With this gap setting, the decorative cover 2 can slide smoothly in the slot 15, and at the same time, it is not easy to produce obvious up-and-down swaying or left-and-right swaying when the sunshade is maintained.

[0044] In this embodiment, the effective meshing depth d between gear 54 and rack 24 e The tooth height h of rack 24 is 0.42 to 0.68 times, and the tooth pitch p of rack 24 is 0.90 to 1.60 times the thickness t of decorative cover plate 2. This arrangement ensures sufficient meshing depth between gear 54 and rack 24, reducing the risk of tooth skipping due to vehicle vibration or the reverse thrust of elastic baffle 4, while also preventing excessive resistance when releasing the limit due to excessive meshing.

[0045] In this embodiment, the ratio of the radius R54 of gear 54 to the radius R53 of ratchet 53 is 1.12 to 1.35. The locking tooth surface pressure angle α of ratchet 53 for engaging with locking plate 57 is 6° to 12°, and the tilt angle β of locking plate 57 relative to the tangent direction of the inner wall of fixed ring 56 under the action of torsion spring is 18° to 32°. Through the above ratio and angle settings, gear 54 can stably drive ratchet 53 to form a stop, and locking plate 57 can reliably engage ratchet 53, reducing the reverse micro-movement of ratchet 53, while preventing excessive operating resistance when releasing the limit.

[0046] In this embodiment, when the decorative cover 2 is in the commonly used sunshade holding position, the compression stroke S of the spring telescopic rod connected to the elastic baffle 4 is its maximum compressible stroke S. maxThe ratio is 0.35 to 0.70 times. This setting allows the elastic baffle 4 to push the decorative cover 2 out after the limit is released, while avoiding excessive reverse load on the rack 24 and gear 54 by the elastic baffle 4 in the sunshade holding state.

[0047] Preferably, the root fillet radius r of the rack 24 is... 24 The radius of the fillet at the entrance edge of slot 15 is 0.12 to 0.25 times the tooth height h of rack 24. 15 The thickness t of the decorative cover plate 2 is 0.08 to 0.18 times that of the thickness t. This reduces localized wear at the repeated engagement positions of the rack 24 and the entrance of the slot 15, allowing the decorative cover plate 2 to maintain good consistency of movement after multiple push-in and release operations.

[0048] The portion of the decorative cover 2 extending beyond the slot 15 can be approximated as a cantilever structure. o The larger the value of L, the more pronounced the downward sag of the protruding end of the decorative cover plate 2; the smaller the value of L, the weaker the support capacity of the slot 15 for the decorative cover plate 2. Therefore, this embodiment limits L... o The ratio with L, L i With L o The proportions are designed to balance the length of the shading and the length of the support.

[0049]

[0050]

[0051]

[0052] Where δ represents the equivalent sag of the protruding end of the decorative cover plate 2, P represents the equivalent load on the protruding section of the decorative cover plate 2, E represents the elastic modulus of the material of the decorative cover plate 2, I represents the moment of inertia of the cross section of the decorative cover plate 2, b represents the effective force-bearing width of the decorative cover plate 2, t represents the thickness of the decorative cover plate 2, and p c This represents the equivalent contact pressure in the support area within slot 15. From the above relationship, it can be seen that when the material and thickness are basically determined, L... o Increasing the size will significantly increase the sagging, while appropriately increasing L... i This can reduce the contact pressure in the support area within slot 15. Therefore, L o Limited to 0.35 to 0.58 times L, and L i Limited to L o It is 0.70 to 1.20 times more effective than the previous method, which can reduce the sagging and swaying of the decorative cover 2 when it is extended as a sun visor.

[0053] Simultaneously, the decorative cover 2, while in the sunshade-maintaining state, is subjected to the reverse force of the elastic baffle 4. This force is transmitted through the rack 24, gear 54, and sleeve 52 to the ratchet 53 and the locking plate 57. If the gear 54 meshes too shallowly with the rack 24, it is easy for the teeth to skip; if the gear 54 meshes too deeply with the rack 24, the release resistance increases. If R 54 / R 53 If R is too large, the locking load on the card plate 57 will increase; if R 54 / R 53 If the size is too small, the meshing stability between gear 54 and rack 24 will be insufficient.

[0054]

[0055]

[0056]

[0057] Where T represents the equivalent torque transmitted from gear 54 to ratchet 53, and F t R represents the reverse tangential force of rack 24 on gear 54. 54 Indicates the radius of gear 54, R 53 Indicates the radius of the ratchet 53, F 57 The equation represents the equivalent force of the locking plate 57 acting on the locking tooth surface of the ratchet 53, α represents the pressure angle of the locking tooth surface of the ratchet 53, F represents the restoring thrust of the elastic baffle 4 on the decorative cover plate 2, k represents the equivalent spring stiffness of the spring telescopic rod, and S represents the compression stroke of the spring telescopic rod. From the above relationships, it can be seen that the compression stroke S of the elastic baffle 4, the radius ratio of the gear 54 and the ratchet 53, and the locking tooth surface angle of the ratchet 53 all jointly affect the anti-reverse stability in the sunshade holding state. Therefore, this embodiment uses d... e / h、R 54 / R 53 α, β and S / S max The coordinated constraint prevents gear 54 and rack 24 from skipping teeth, and ratchet 53 and clamp 57 from loosening in the opposite direction, while maintaining smooth operation when releasing the limit.

Claims

1. A decorative cover plate display device, comprising a housing, a display panel embedded in the front of the housing, side edges symmetrically arranged on both sides of the display panel, and a decorative cover plate disposed between the side edges, characterized in that, The front of the outer shell and the upper edge of the decorative cover are fitted with slots that slide with the decorative cover. Rotating columns are rotatably connected to the opposite sides of the side edges. A square groove with an opening size matching the opening size of the slot is fitted into one side of the rotating column. Sliding blocks that slide with the square groove are symmetrically arranged on both sides of the decorative cover. A third sliding groove is provided through the decorative cover plate on the side away from the sliding block. A locking component is assembled and connected in the third sliding groove. A second sliding groove is embedded on the front of the outer shell below the display panel. A limiting rod corresponding to and adapted to the locking component is connected in the second sliding groove. The slot is provided with elastic baffles that slide in cooperation with the square slot on both sides. The elastic baffles are connected to the slot with a spring telescopic rod. The outer shell is provided with a first sliding groove on the upper side of the display panel. A limiting component is provided in the first sliding groove. The end of the limiting component extends into the first sliding groove and is adapted to the decorative cover. The bottom of the decorative cover plate is embedded with a strip groove, the end of the strip groove passes through the end of the decorative cover plate near the slot, and the strip groove extends radially. A toothed rack is provided on one side of the strip groove, and the toothed rack is connected to the end of the limiting component. The limiting component includes a rotating shaft rotatably connected in a slot, a sleeve slidably sleeved around the rotating shaft, the sleeve and the rotating shaft being splined together, the sleeve being able to rotate synchronously with the rotating shaft and slide axially, a ratchet and a gear being fixedly connected side by side around the sleeve, a handle being fixedly connected to one side of the sleeve, and the end of the handle away from the sleeve passing through the first sliding groove.

2. The decorative cover plate display device according to claim 1, characterized in that, A torsion spring is connected between the rotating column and the side edge. The torsion spring causes the square groove opening on the rotating column to face the slot, and the square groove opening is flush with the edge of the slot.

3. The decorative cover plate display device according to claim 1, characterized in that, A gasket is embedded in the periphery of the display panel. When the decorative cover plate covers the front of the display panel, the inner side of the decorative cover plate is in contact with the gasket.

4. The decorative cover plate display device according to claim 1, characterized in that, The locking component is slidably connected in the third slide groove, and a groove is embedded in the side of the locking component facing the limiting rod, and the groove and the limiting rod are correspondingly matched.

5. A decorative cover plate display device according to claim 4, characterized in that, The radius of the gear is greater than that of the ratchet, and the gear extends upward from the bottom of the slot and meshes with a rack that extends into the bottom of the decorative cover plate in the slot.

6. A decorative cover plate display device according to claim 5, characterized in that, A fixing ring is fixedly connected to the bottom of the slot. The fixing ring is located around the ratchet, and multiple sets of locking plates are rotatably connected to the inner wall of the fixing ring. The locking plates are connected to the inner wall of the fixing ring by torsion springs, and the locking plates are tilted by the torsion springs. The end of the locking plate is engaged with the ratchet.

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