A car rollover screen

Abstract

The application discloses a car turnover screen, comprising: an instrument desk, the instrument desk comprising a first instrument desk, a second instrument desk and a support frame; the support frame is arranged at the front of the vehicle cabin, the first instrument desk and the second instrument desk are arranged on the support frame at intervals, and the height of the second instrument desk is higher than that of the first instrument desk; a central control screen is arranged between the first instrument desk and the second instrument desk; an entertainment screen is arranged between the first instrument desk and the second instrument desk, and the entertainment screen is closer to the front of the vehicle than the central control screen; a turnover assembly comprises a sliding block, the sliding block is slidingly arranged on the support frame, the sliding block is rotationally connected with the central control screen, and the sliding block drives the central control screen to turn over to shield or open the entertainment screen. The application can facilitate adjusting the display area of the central control screen according to the needs of the driver and passengers.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobiles, in particular to an automobile turnover screen. BACKGROUND

[0002] The automobile central control screen is located in the vehicle cabin close to the front of the automobile, and the central control screen is a window for information exchange between the automobile and the driver and passengers. The central control screen is generally used for controlling the opening and closing of the air conditioner and the window, and can display navigation information and vehicle state information, and can be used for viewing and listening to songs and other entertainment activities.

[0003] In the related art, the central control screen of a traditional vehicle is generally a small central control screen, which only displays some basic information of the vehicle, and the displayed information is less, which is not conducive to the driver to watch and operate. Some vehicles have a large central control screen, but it occupies a large space. When the vehicle is driving, the driver and passengers hope that the screen is relatively small to reduce the obstruction of the line of sight and the occupation of the space in the vehicle. When the vehicle is parked for entertainment, the driver and passengers hope that the screen is large to obtain a larger viewing area. However, the central control screen of the automobile is generally fixedly connected with the front part of the vehicle cabin, and it is difficult to adjust, so that the two cannot be satisfied. With the advent of the era of new energy vehicles, a single area of the central control screen cannot meet the needs of people. SUMMARY

[0004] In order to facilitate the adjustment of the area of the central control screen according to the needs of the driver and passengers, the application provides an automobile turnover screen.

[0005] The application provides an automobile turnover screen, which adopts the following technical scheme:

[0006] An automobile turnover screen comprises:

[0007] A dashboard, which comprises a first dashboard, a second dashboard and a support frame; the support frame is arranged at the front part of the vehicle cabin, and the first dashboard and the second dashboard are arranged on the support frame at intervals, and the height of the second dashboard is higher than that of the first dashboard;

[0008] A central control screen, which is arranged between the first dashboard and the second dashboard;

[0009] An entertainment screen, which is arranged between the first dashboard and the second dashboard, and the entertainment screen is closer to the front part of the automobile than the central control screen, and the area of the entertainment screen is larger than that of the central control screen;

[0010] A turnover assembly, which comprises a sliding block, the sliding block is slidingly arranged on the support frame, and the sliding block is rotationally connected with the central control screen, and the sliding block drives the central control screen to turn over to shield or open the entertainment screen.

[0011] By adopting the technical scheme, when the slider drives the central control screen to flip, the central control screen blocks the entertainment screen, at this time the entertainment screen is closed, and the driver and passenger can watch the information displayed on the central control screen; when the slider resets to open the entertainment screen of the central control screen, the entertainment screen is opened to obtain a larger viewing area.

[0012] Optionally, the flip assembly comprises:

[0013] A support groove body is arranged on the support frame.

[0014] A guide rail is arranged in the support groove body.

[0015] A first driving source is arranged on the slider and drives the slider to slide along the length direction of the guide rail.

[0016] By adopting the technical scheme, the support groove body can provide support force for the slider and the guide rail, when the first driving source drives the slider to slide along the length direction of the guide rail, the central control screen flips and blocks the entertainment screen, so that the driver and passenger can watch the information of the central control screen; when the first driving source drives the slider to reset, at this time the entertainment screen can be opened to watch a larger display area.

[0017] Optionally, the flip assembly comprises:

[0018] A rack is arranged in the support groove body.

[0019] A gear is connected with the output end of the first driving source, and the first driving source is arranged on the slider.

[0020] By adopting the technical scheme, when the output end of the first driving source drives the gear to rotate, the slider can be driven to slide along the length direction of the guide rail due to the meshing of the gear and the rack, so that the slider can drive the central control screen to flip and reset.

[0021] Optionally, the first driving source is arranged in the support groove body, and the output end of the first driving source is connected with the slider.

[0022] By adopting the technical scheme, since the first driving source is arranged in the support groove body, the output end of the first driving source can drive the slider to slide along the length direction of the guide rail.

[0023] Optionally, the flip assembly further comprises:

[0024] A fixing frame is arranged on the slider, the fixing frame is hinged with the central control screen, and the first driving source is connected with the fixing frame.

[0025] A guide column is connected with the fixing frame, and the support groove body is provided with a sliding groove for the guide column to slide.

[0026] By adopting the above technical solution, the first driving source is set in the fixed frame, and the fixed frame can provide support for the first driving source; the guide column can slide along the sliding groove, and the guide column can make the fixed frame and the slider slide more stably when sliding.

[0027] Optionally, the flipping component further includes:

[0028] A first support bar is connected to the second instrument panel;

[0029] The second support bar is hinged to the central control screen, and the first support bar is hinged to the second support bar.

[0030] By adopting the above technical solution, since the first support bar is hinged to the second support bar and the second support bar is hinged to the central control screen, when the slider moves and applies force to the central control screen, the central control screen can flip between the first instrument panel and the second instrument panel.

[0031] Optionally, the first support strip includes a first base strip and a first connecting strip; the first base strip is connected to the second instrument panel, and the first connecting strip is detachably connected to the first base strip;

[0032] The second support bar includes a second base bar and a second connecting bar. The second base bar is hinged to the central control screen, and the second connecting bar is detachably connected to the second base bar. The first connecting bar is hinged to the second connecting bar.

[0033] By adopting the above technical solution, when the central control screen is in the storage state, the first and second connecting strips can be disassembled, so as not to block the entertainment screen located behind, thus improving the viewing experience.

[0034] Optionally, the car flip screen further includes a lifting assembly, the lifting assembly comprising:

[0035] A lifting bar is connected to the bottom wall of the entertainment screen and is slidably mounted on a support frame; the second instrument panel has a through slot for the entertainment screen to pass through.

[0036] A second drive source is disposed on the support frame, and the second drive source drives the lifting bar to make the entertainment screen pass through the through slot.

[0037] By adopting the above technical solution, since the lifting bar is slidably set on the support frame, the second drive source can make the entertainment screen pass through the through slot. At this time, the central control screen and the entertainment screen can be turned on at the same time to obtain a larger viewing area. In-car movie viewing can be carried out when the car is parked, improving the driving experience.

[0038] Optionally, the lifting assembly further includes:

[0039] A slide rail, which is mounted on the support frame;

[0040] A sliding block is slidably disposed on the slide rail; the sliding block is connected to the lifting bar.

[0041] By adopting the above technical solution, when the second driving source drives the sliding block to slide along the length direction of the slide rail, it can drive the lifting bar to move up and down, thereby realizing the lifting function of the entertainment screen.

[0042] In summary, this application includes at least one of the following beneficial effects:

[0043] 1. The first drive source drives the slider to slide along the length of the guide rail, causing the central control screen to flip and reveal the entertainment screen, so as to obtain a larger viewing area;

[0044] 2. The second drive source drives the sliding block to slide along the length of the slide rail, so that the entertainment screen passes through the through slot, and the central control screen and the entertainment screen can be started at the same time to obtain a larger viewing area;

[0045] 3. The second driving source drives the entertainment screen to rise and fall, thereby obtaining a better viewing experience. Attached Figure Description

[0046] Figure 1 This is an overall schematic diagram of the car flip screen of Embodiment 1 of this application;

[0047] Figure 2 This is an exploded view of the car flip screen in Embodiment 1 of this application;

[0048] Figure 3 This is a schematic diagram illustrating the flipping component in Embodiment 1 of this application;

[0049] Figure 4 This is an exploded view of the flipping component of Embodiment 1 of this application;

[0050] Figure 5 yes Figure 2 An enlarged schematic diagram of part A in the middle;

[0051] Figure 6 yes Figure 2 Enlarged schematic diagram of part B;

[0052] Figure 7 This is a schematic diagram illustrating the limiting component in Embodiment 1 of this application;

[0053] Figure 8 This is a schematic diagram of the control screen in a flipped state in Embodiment 1 of this application;

[0054] Figure 9 This is an overall schematic diagram of the car flip screen of Embodiment 2 of this application;

[0055] Figure 10 is Figure 9 is an enlarged schematic view of part C in

[0056] Figure 11 is a partial schematic view of the application embodiment 2 removing the entertainment screen back display lifting assembly;

[0057] Figure 12 is a whole schematic view of the application embodiment 3 automobile turnover screen;

[0058] Figure 13 is Figure 12 is an enlarged schematic view of part D in

[0059] Figure 14 is a schematic view of the application embodiment 3 showing the first support bar and the second support bar.

[0060] Reference signs: 1, instrument desk; 11, first instrument desk; 12, second instrument desk; 121, through slot; 122, through hole; 13, support frame; 131, first support frame; 132, second support frame; 133, third support frame; 14, containing groove body; 141, sliding groove; 2, central control screen; 21, placing groove; 3, entertainment screen; 4, turnover assembly; 41, support groove body; 411, sliding groove; 42, first driving source; 43, guide rail; 44, sliding block; 45, fixing frame; 46, rack; 47, gear; 48, guide column; 49, first support bar; 491, first base bar; 492, first connecting bar; 40, second support bar; 401, second base bar; 402, second connecting bar; 5, limiting assembly; 51, limiting block; 52, limiting elastic sheet; 53, protruding block; 6, lifting assembly; 61, lifting bar; 62, second driving source; 63, sliding rail; 64, sliding block. DETAILED DESCRIPTION

[0061] The application will be described in further detail below with reference to the drawings. Figures 1-14 The application will be described in further detail below with reference to the drawings.

[0062] Embodiment 1

[0063] The application embodiment 1 discloses an automobile turnover screen.

[0064] Reference Figure 1 An automobile turnover screen comprises an instrument desk 1, a central control screen 2 and a turnover assembly 4. The instrument desk 1 is arranged at a position close to the car head in the car interior, and the central control screen 2 is arranged on the instrument desk 1. The turnover assembly 4 is arranged on the instrument desk 1, and the turnover assembly 4 can turn over and store the central control screen 2.

[0065] Reference Figure 2, the instrument desk 1 comprises a first instrument desk 11, a second instrument desk 12 and a support frame 13. The support frame 13 is located in the vehicle cabin near the vehicle head, the support frame 13 comprises a first support frame 131 and a second support frame 132, the first support frame 131 is horizontally arranged, the second support frame 132 is vertically arranged, and the first support frame 131 is fixedly connected with the second support frame 132. The first instrument desk 11 is fixedly connected with the first support frame 131 and the second support frame 132, the second instrument desk 12 is fixedly connected with the second support frame 132, and the first instrument desk 11 and the second instrument desk 12 have a spacing in the vertical direction, and the height of the second instrument desk 12 is higher than the height of the first instrument desk 11.

[0066] With reference to Figure 2 , the instrument desk 1 further comprises a containing groove 14, the containing groove 14 is located between the first instrument desk 11 and the first support frame 131, and the containing groove 14 is fixedly connected with the first instrument desk 11 and the first support frame 131 respectively, and the central control screen 2 can be accommodated in the containing groove 14.

[0067] With reference to Figure 3 and Figure 4 , the turnover assembly 4 comprises a support groove 41, a first driving source 42, a guide rail 43, a sliding block 44 and a fixing frame 45. The support groove 41 is a rectangular block with a groove, the support groove 41 is located below the containing groove 14, and the support groove 41 is fixedly connected with the support frame 13. In the embodiment, two support grooves 41 are provided, and the two support grooves 41 correspond to the two ends of the first instrument desk 11 respectively. The guide rail 43 is located in the support groove 41 and is fixedly connected to the bottom wall of the support groove 41, the length direction of the guide rail 43 is from the vehicle head to the vehicle tail, the sliding block 44 is slidingly arranged on the guide rail 43, and the sliding block 44 can slide along the length direction of the guide rail 43. The fixing frame 45 is fixedly connected with the sliding block 44, and the first driving source 42 is located in the fixing frame 45. In the embodiment, the first driving source 42 is a motor, and the first driving source 42 is fixedly connected with the fixing frame 45.

[0068] In other embodiments of the application, the first driving source 42 can also be an electric push rod or an electric cylinder, the first driving source 42 is directly fixedly connected to the bottom wall of the support groove 41, and the output end of the first driving source 42 is fixedly connected with the sliding block 44, so that the first driving source 42 can also drive the sliding block 44 to slide along the length direction of the guide rail 43.

[0069] With reference to Figure 4The turnover assembly 4 further comprises a rack 46, a gear 47 and a guide column 48. The rack 46 is arranged along the length direction of the support groove 41 and is fixedly connected with the support groove 41. The gear 47 is fixedly connected with the output end of the first driving source 42 and is engaged with the rack 46. The side wall of the support groove 41 is provided with a sliding groove 411, and the length direction of the sliding groove 411 is the same as that of the guide rail 43. The guide column 48 is fixedly connected with the fixed frame 45 and is slidingly fitted in the sliding groove 411. When the first driving source 42 drives the gear 47 to rotate, the fixed frame 45 and the sliding block 44 can be driven to slide along the length direction of the guide rail 43 due to the engagement between the gear 47 and the rack 46.

[0070] With reference to Figure 3 The side wall of the accommodating groove 14 is provided with a sliding groove 141, and the length direction of the sliding groove 141 is the same as that of the guide rail 43. The fixed frame 45 is hingedly connected with the side of the central control screen 2 close to the head of the automobile, and the hinged shaft is slidingly arranged in the sliding groove 141.

[0071] With reference to Figure 5 The turnover assembly 4 further comprises a first support strip 49 and a second support strip 40. The first support strip 49 is fixedly connected with the bottom wall of the second instrument panel 12, the second support strip 40 is hingedly connected with the top wall of the central control screen 2, and the first support strip 49 is hingedly connected with the second support strip 40.

[0072] When the sliding block 44 slides along the guide rail 43, the fixed frame 45 can be driven to move, the fixed frame 45 drives the side of the central control screen 2 close to the head of the automobile to slide, so that the central control screen 2 can be turned over, and when the central control screen 2 is turned over, the central control screen 2 abuts against the second instrument panel 12, at this time, the central control screen 2 is in the turned-over state; when the first driving source 42 resets the sliding block 44, the central control screen 2 is turned over and accommodated in the accommodating groove 14.

[0073] With reference to Figure 6 And Figure 7 The automobile turnover screen further comprises a limiting assembly 5, and the limiting assembly 5 comprises a limiting block 51, a limiting spring piece 52 and a protruding block 53. The limiting block 51 is fixedly connected with the first support frame 131, the limiting spring piece 52 is fixedly connected with the side of the limiting block 51 close to the fixed frame 45, the limiting spring piece 52 is arranged obliquely, and the fixed frame 45 can abut against the limiting spring piece 52. The protruding block 53 is fixedly connected with the limiting block 51 and is located between the limiting spring piece 52 and the limiting block 51.

[0074] With reference to Figure 6 And Figure 7The limiting block 51, the limiting elastic sheet 52 and the protrusion 53 form a set of limiting assemblies 5, and in the embodiment, four sets of limiting assemblies 5 are arranged at both ends of the length direction of the support frame 13. For the two sets of limiting assemblies 5 on the same side, the respective limiting elastic sheets 52 are arranged opposite to each other, that is, in the direction from the head of the automobile to the tail of the automobile, the limiting elastic sheet 52 of the limiting assembly 5 close to the head of the automobile gradually approaches the limiting block 51, and the limiting elastic sheet 52 of the limiting assembly 5 close to the tail of the automobile gradually moves away from the limiting block 51.

[0075] When the slider 44 is moved to the maximum displacement or reset by controlling the number of rotations of the first driving source 42, the fixed frame 45 can abut against the limiting elastic sheet 52, which can assist in limiting the angle of rotation of the central control screen 2 and reduce the damage to the central control screen 2 caused by the rotation angle exceeding the range.

[0076] Reference Figure 8 The automobile turnover screen further comprises an entertainment screen 3, the entertainment screen 3 is located between the first instrument desk 11 and the second instrument desk 12, the entertainment screen 3 is vertically arranged, the top side of the entertainment screen 3 is fixedly connected with the second instrument desk 12, and the bottom side of the entertainment screen 3 is fixedly connected with the first instrument desk 11. The area of the entertainment screen 3 is greater than that of the central control screen 2, and when the central control screen 2 is in the turnover state, the entertainment screen 3 is located on the side close to the head of the automobile of the central control screen 2, that is, the central control screen 2 in the turnover state can shield the entertainment screen 3.

[0077] The implementation principle of the automobile turnover screen in the embodiment 1 is as follows: when the second driving source 62 drives the slider 44 to slide along the length direction of the guide rail 43, the central control screen 2 can be in the turnover state, and the driver or passenger can watch the information of the central control screen 2. When the second driving source 62 drives the slider 44 to reset, the central control screen 2 is located in the accommodating groove 14, so that the entertainment screen 3 is exposed. Since the area of the entertainment screen 3 is greater than that of the central control screen 2, the driver or passenger can have a larger display area and more display information.

[0078] Embodiment 2

[0079] The automobile turnover screen is disclosed in the embodiment 2.

[0080] Reference Figure 9 And Figure 10 The difference between the embodiment 2 and the embodiment 1 is that the automobile turnover screen further comprises a lifting assembly 6, the lifting assembly 6 comprises a lifting strip 61, a second driving source 62, a sliding rail 63 and a sliding block 64. The lifting strip 61 is in a strip shape, the lifting strip 61 is located on the side close to the front of the automobile of the first instrument desk 11, and the bottom wall of the entertainment screen 3 is fixedly connected with the lifting strip 61. The sliding rail 63 is vertically arranged and fixedly connected with the second support frame 132, the sliding block 64 is slidingly arranged on the sliding rail 63, and the sliding block 64 is fixedly connected with the lifting strip 61.

[0081] With reference to Figure 11 The support frame 13 comprises a third support frame 133 fixedly connected with the second instrument desk 12, the first instrument desk 11 and the second support frame 132 respectively, and an opening is formed in the middle of the third support frame 133, which can expose the entertainment screen 3. The second driving source 62 is fixedly connected with the third support frame 133, and the output end of the second driving source 62 is fixedly connected with the sliding block 64. In the embodiment, the second driving source 62 is a pneumatic cylinder, and in other embodiments of the application, it can also be an electric cylinder or an electric push rod.

[0082] With reference to Figure 9 and Figure 11 The second instrument desk 12 is provided with a through slot 121 for the entertainment screen 3 to pass through. When the second driving source 62 drives the sliding block 64 to slide along the length direction of the sliding rail 63, the sliding block 64 drives the lifting bar 61 to move up and down. Since the bottom wall of the entertainment screen 3 is fixedly connected with the lifting bar 61, it is equivalent to that the entertainment screen 3 is slidably arranged on the second support frame 132, so that the lifting bar 61 drives the entertainment screen 3 to move upward and pass through the through slot 121, and further, the entertainment screen 3 forms a larger display area with the central control screen 2 in the flipped state.

[0083] In the embodiment, the central control screen 2 can be in the flipped state, so that the driver and passengers can watch the central control screen 2; the central control screen 2 can be accommodated in the accommodating groove 14, so that the driver and passengers can watch the entertainment screen 3; and the entertainment screen 3 can pass through the through slot 121, and at the same time, the central control screen 2 is in the flipped state, so that the driver and passengers can watch the central control screen 2 and the entertainment screen 3 at the same time.

[0084] The implementation principle of the automobile flip screen in the embodiment 2 of the application is that when the second driving source 62 drives the sliding block 64 to slide along the length direction of the sliding rail 63, the sliding block 64 can drive the lifting bar 61 to move upward, so that the entertainment screen 3 passes through the through slot 121 for the driver and passengers to watch.

[0085] Embodiment 3

[0086] The embodiment 3 of the application discloses an automobile flip screen.

[0087] With reference to Figure 12 and Figure 13 The difference between the embodiment 3 and the embodiment 2 of the application is that the first support bar 49 comprises a first base bar 491 and a first connecting bar 492. The first base bar 491 is fixedly connected with the second instrument desk 12, and a dovetail groove is formed in the first base bar 491. The first connecting bar 492 is fixedly connected with a dovetail block, and the dovetail block is matched with the dovetail groove, so that the first base bar 491 and the first connecting bar 492 are detachably connected.

[0088] With reference to Figure 13 and Figure 14The second supporting strip 40 comprises a second base strip 401 and a second connecting strip 402. The second base strip 401 is hinged to the central control screen 2, and a top wall of the central control screen 2 is provided with a placing groove 21 capable of accommodating the second base strip 401. The second connecting strip 402 is hinged to the first connecting strip 492. The second base strip 401 is provided with a dovetail groove, and the second connecting strip 402 is fixedly connected with a dovetail block. The dovetail block is matched with the dovetail groove, so that the second connecting strip 402 is detachably connected with the second base strip 401.

[0089] The implementation principle of the automobile turnover screen in the embodiment 3 of the present application is as follows: when the central control screen 2 is accommodated in the accommodating groove body 14, the first connecting strip 492 and the second connecting strip 402 are detached, and the second base strip 401 is located in the placing groove 21, so that the driver and the passenger can watch the entertainment screen 3 without any influence.

[0090] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made on the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A car flip screen, characterized in that: include: The instrument panel (1) includes a first instrument panel (11), a second instrument panel (12), and a support frame (13); the support frame (13) is located at the front of the vehicle compartment, and the first instrument panel (11) and the second instrument panel (12) are spaced apart on the support frame (13), with the height of the second instrument panel (12) being higher than the height of the first instrument panel (11); The central control screen (2) is located between the first instrument panel (11) and the second instrument panel (12); An entertainment screen (3) is located between the first instrument panel (11) and the second instrument panel (12). The entertainment screen (3) is closer to the front of the car than the central control screen (2). The area of ​​the entertainment screen (3) is larger than that of the central control screen (2). The flip component (4) includes a slider (44), which is slidably disposed on the support frame (13). The slider (44) is rotatably connected to the central control screen (2). The slider (44) drives the central control screen (2) to flip to cover or open the entertainment screen (3). The car flip screen also includes a lifting assembly (6), which includes: The lifting bar (61) is connected to the bottom wall of the entertainment screen (3) and is slidably mounted on the support frame (13); the second instrument panel (12) has a through slot (121) through which the entertainment screen (3) passes. The second drive source (62) is disposed on the support frame (13) and drives the lifting bar (61) to make the entertainment screen (3) pass through the through groove (121); The lifting assembly (6) also includes: A slide rail (63) is mounted on the support frame (13); A sliding block (64) is slidably disposed on the slide rail (63); the sliding block (64) is connected to the lifting bar (61).

2. The car flip screen according to claim 1, characterized in that: The flipping component (4) includes: Support groove (41), the support groove (41) is disposed on the support frame (13); Guide rail (43), the guide rail (43) is disposed in the support groove (41); The first driving source (42) drives the slider (44) to slide along the length direction of the guide rail (43).

3. The car flip screen according to claim 2, characterized in that: The flipping component (4) includes: A rack (46) is disposed within the support groove (41); Gear (47), the gear (47) is connected to the output end of the first drive source (42); the first drive source (42) is disposed on the slider (44).

4. A car flip screen according to claim 2, characterized in that: The first drive source (42) is disposed in the support groove (41), and the output end of the first drive source (42) is connected to the slider (44).

5. A car flip screen according to claim 3, characterized in that: The flipping component (4) also includes: A fixing frame (45) is mounted on the slider (44), the fixing frame (45) is hinged to the central control screen (2), and the first driving source (42) is connected to the fixing frame (45). The guide post (48) is connected to the fixing frame (45), and the support groove (41) is provided with a sliding groove (411) for the guide post (48) to slide.

6. A car flip screen according to claim 1, characterized in that: The flipping component (4) also includes: The first support bar (49) is connected to the second instrument panel (12); The second support bar (40) is hinged to the central control screen (2), and the first support bar (49) is hinged to the second support bar (40).

7. A car flip screen according to claim 6, characterized in that: The first support bar (49) includes a first base bar (491) and a first connecting bar (492); the first base bar (491) is connected to the second instrument panel (12), and the first connecting bar (492) is detachably connected to the first base bar (491); The second support bar (40) includes a second base bar (401) and a second connecting bar (402). The second base bar (401) is hinged to the central control screen (2). The second connecting bar (402) is detachably connected to the second base bar (401). The first connecting bar (492) is hinged to the second connecting bar (402).

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