Vehicle-mounted ceiling screen mechanism

Abstract

The utility model provides a vehicle-mounted ceiling screen mechanism. A driving motor is connected with a display screen connecting structure through a speed reducing mechanism so as to drive the display screen connecting structure to rotate; the display screen connecting structure comprises a screen connecting piece, an output shaft and a resistance torque structure, the screen connecting piece is rotatably arranged on the output shaft, and the resistance torque structure is arranged between the output shaft and the screen connecting piece. And when the moment in the opening or closing direction borne by the resistance torque structure is higher than a resistance torque threshold value corresponding to the resistance torque structure, the screen connecting piece rotates relative to the output shaft. Normal rotation opening and closing of the screen can be guaranteed, the screen can be protected, accidental injury or screen damage caused by collision or inertia of passengers on the screen can be prevented, the screen assembly is further combined with an output shaft damping structure, small-force-value shaking of the screen assembly can be eliminated by the output shaft damping structure, and the screen assembly can be prevented from being damaged. And user experience is improved.

Description

Technical Field

[0001] The utility model relates to a vehicle-mounted ceiling screen mechanism. Background Art

[0002] The installation structure of the vehicle-mounted ceiling display screen includes a top mounting plate, a display screen rotation drive motor and a reduction mechanism. The display screen rotation drive motor is arranged on the top mounting plate, and the motor drives the screen to rotate downward to open and rotate upward to close through the reduction mechanism. When the screen is in the open state, the screen is actually locked by the motor and cannot rotate forward and backward. In this way, once the vehicle stops or accelerates suddenly during driving, the installation structure of the display screen may be damaged by inertia, or once the passengers in the car collide with the screen, it may cause accidental injury to the passengers or damage to the screen. Utility Model Content

[0003] The problem to be solved by the utility model is to provide a vehicle-mounted ceiling screen mechanism, which can not only ensure the normal rotation opening and closing of the screen, but also protect the screen to prevent passengers from accidentally being injured or damaged by bumping the screen due to collision or inertia. To this end, the utility model adopts the following technical solutions:

[0004] A vehicle-mounted ceiling screen mechanism comprises a driving motor, a reduction mechanism and a display screen connection structure, wherein the driving motor is connected to the display screen connection structure via the reduction mechanism to drive the display screen connection structure to rotate; the characteristic is that the display screen connection structure comprises a screen connection member, an output shaft and a resistance torque structure, the screen connection member is rotatably arranged on the output shaft, the resistance torque structure is arranged between the output shaft and the screen connection member, and when the torque in the opening or closing direction received by the resistance torque structure is higher than the resistance torque threshold corresponding to the resistance torque structure, the screen connection member rotates relative to the output shaft.

[0005] On the basis of adopting the above technical solutions, the present invention can also adopt the following further technical solutions, or use these further technical solutions in combination:

[0006] The resistance torque structure is an adjustable resistance torque structure, which can adjust the torque threshold.

[0007] The resistance torque structure includes a first friction component that rotates synchronously with the output shaft and a second friction component that can rotate relative to the output shaft. The first friction component and the second friction component are pressed by an elastic element. The resistance torque structure is also provided with an element for adjusting the force value of the elastic element or the elastic element is replaceable.

[0008] The resistance torque structure includes a first friction component that rotates synchronously with the drive shaft and a second friction component that can rotate relative to the drive shaft. The first friction component and the second friction component are pressed by an elastic element. The first friction component, the second friction component and the elastic element are all sleeved on the output shaft. The resistance torque structure is also provided with a nut for adjusting the force value of the elastic element.

[0009] The second friction component is a structure on the screen connecting member, and is located on one side of the structure in which the screen connecting member is rotatably connected to the output shaft.

[0010] It is also provided with an output shaft damping structure to prevent the output shaft from shaking at small forces and eliminate shaking caused by hollow stroke or virtual displacement of the drive component.

[0011] The hollow stroke or virtual displacement of the driving assembly includes the gap between parts inside the reduction mechanism.

[0012] The output shaft damping structure includes a reed tube, the reed tube is connected to a fixed structure, and the reed tube clamps the output shaft.

[0013] The reed tube is provided with a connecting handle, which is connected to the housing of the reduction mechanism. The output shaft is connected to the final gear of the reduction structure, and the reed tube clamps the part of the output shaft that is inside the housing of the reduction mechanism. The connecting handle is also connected to a limiting sleeve, which is sleeved on the part of the output shaft that is inside the housing of the reduction mechanism.

[0014] Due to the adoption of the technical solution of the utility model, the vehicle-mounted ceiling screen mechanism provided by the utility model has an anti-overload function. Through the anti-overload structure on the output shaft and the output shaft, the screen is rotatably connected to the output shaft under the protection of the anti-overload structure, which not only ensures that the screen can be normally rotated to open and close, but also protects the screen to prevent accidental injury or damage to the screen caused by collision or inertia caused by passengers bumping the screen, which can not only protect the mechanism from damage, but also ensure the safety of users in special circumstances; and, once a special situation occurs or the drive module does not work, the screen assembly can be rotated downward to open or rotated upward to close under the action of forced force; further, the utility model can be designed as an adjustable anti-overload, and through the design of the disc spring-friction plate torque module, the basic torque size can be adjusted by the disc spring compression to adjust the specific setting of the overload. In addition, the utility model is also combined with the output shaft damping structure. By adding a damping mechanism between the output shaft and the fixed body, the shaking of the screen assembly with a small force value can be eliminated by the output shaft damping mechanism, eliminating the shaking caused by the hollow stroke / virtual displacement of the drive assembly, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the embodiment provided by the utility model when the screen is opened.

[0016] Figure 2 for Figure 1 Exploded view of the illustrated embodiment.

[0017] Figure 3 for Figure 1 An exploded view of the vehicle-mounted ceiling screen installation structure of the illustrated embodiment.

[0018] Figure 4 for Figure 1 Schematic diagram of the drive assembly of the illustrated embodiment.

[0019] Figure 5 for Figure 4 Top view of the structure shown. DETAILED DESCRIPTION

[0020] Referring to the accompanying drawings, the utility model provides a vehicle-mounted ceiling screen mechanism, comprising a driving motor 1, a reduction mechanism 2 and a display screen connection structure, wherein the driving motor 1 is connected to the display screen connection structure through the reduction mechanism 2 to drive the display screen connection structure to rotate. The driving motor 1 is connected to a mounting structure 100, which may be a mounting plate, and the mounting structure is connected to a vehicle roof frame.

[0021] The display screen connection structure includes a screen connector 3, an output shaft 4 and a resistance torque structure. The screen connector 3 is rotatably arranged on the output shaft 4, and the resistance torque structure is arranged between the output shaft 4 and the screen connector 3. The display screen 200 is connected to the display screen connector 3 in the display screen connection structure. Under normal circumstances, due to the existence of the resistance torque structure, when the drive motor is working, the output shaft 4, the screen connector 3, the resistance torque structure and the display screen 200 rotate together. When the torque in the opening or closing direction received by the resistance torque structure is higher than the resistance torque threshold value corresponding to the resistance torque structure (for example, the display screen is hit by a human body), the screen connector 3 and the display screen 200 can rotate relative to the output shaft 4, thereby playing a protective role. In addition, once a special situation occurs or the drive module does not work, the screen assembly can be rotated downward to open or rotated upward to close relative to the output shaft 4 under the action of forced force, thereby avoiding the drive motor and the reduction mechanism.

[0022] The resistance torque structure may adopt an adjustable resistance torque structure, which can adjust the torque threshold. The resistance torque structure includes a first friction component 51 that rotates synchronously with the output shaft 4 and a second friction component 52 that can rotate relative to the output shaft 4. The first friction component 51 and the second friction component 52 are pressed by an elastic element 53. The resistance torque structure is also provided with an element that adjusts the force value of the elastic element, so that the friction between the first friction component 51 and the second friction component 52 can adjust the resistance torque threshold.

[0023] The first friction component 51, the second friction component 52 and the elastic element 53 are all sleeved on the output shaft 4. The first friction component 51 can be a friction ring that matches the flat part of the output shaft, and the elastic element 53 can be a plurality of disc springs. The second friction component 52 is a structure on the screen connector 3, and is located on one side of the structure 31 that the screen connector 3 is rotatably connected to the output shaft 4. The resistance torque structure is also provided with a nut 54 for adjusting the force value of the elastic element. In addition, adjusting the number of disc springs can also adjust the resistance torque threshold.

[0024] In addition, the above-mentioned friction structure can also be designed and implemented as a cam structure as needed to achieve multi-stage variable force value functions such as increasing the cam climbing force value / reducing the cam downhill force value.

[0025] Due to the existence of gear clearance in the reduction mechanism, the drive module will inevitably have a certain degree of empty travel / virtual displacement, which will cause the device to shake when subjected to reverse force, affecting the use effect. The vehicle-mounted ceiling screen mechanism is also provided with an output shaft damping structure to prevent the output shaft 4 (and the screen connector 3 and display screen 200 on the output shaft) from shaking at the above-mentioned small force value, and eliminate the shaking caused by the empty travel or virtual displacement of the drive component. The empty travel or virtual displacement of the drive component includes the gap between the parts inside the reduction mechanism 2.

[0026] The output shaft damping structure includes a reed tube 6 , which is a set having an axial slit and being elastic in the circumferential direction. The reed tube 6 is connected to a fixed structure, and the reed tube 6 clamps the output shaft 4 .

[0027] The connection between the reed pipe 6 and the fixed structure can adopt the following structure: the reed pipe 6 is provided with a connecting handle 60, the fixed structure adopts the housing 20 of the reduction mechanism, the output shaft 4 is connected to the final gear 21 of the reduction mechanism, and the reed pipe 6 clamps the part of the output shaft 4 in the housing 20 of the reduction mechanism, and the connecting handle 60 is also connected to a limiting sleeve 61, and the limiting sleeve 61 is sleeved on the part of the output shaft in the housing of the reduction mechanism. This helps to reduce the shape and volume of the parts and make the output shaft damping structure more reliable.

[0028] The "friction enveloping circle structure" of the output shaft damping structure can be designed as a "variable diameter profile" to produce variable force values ​​at different angles as needed. The damping structure can also achieve different torques for opening / closing, achieving the effect of "light closing and heavy opening". When closing, it can offset the increase in torque / increase in motor load caused by the gravity of the screen.

[0029] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the protection scope of the present invention.

[0030] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0031] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "inside", "horizontal", "end", "length", "outer end", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are also used only for the simplicity of description, and do not indicate or imply relative importance.

Claims

1. A vehicle-mounted ceiling screen mechanism, comprising a driving motor, a speed reduction mechanism and a display screen connection structure, wherein the driving motor is connected to the display screen connection structure through the speed reduction mechanism to drive the display screen connection structure to rotate; characterized in that The display screen connection structure includes a screen connection member, an output shaft and a resistance torque structure. The screen connection member is rotatably arranged on the output shaft, and the resistance torque structure is arranged between the output shaft and the screen connection member. When the torque in the opening or closing direction received by the resistance torque structure is higher than the resistance torque threshold corresponding to the resistance torque structure, the screen connection member rotates relative to the output shaft.

2. A vehicle-mounted ceiling screen mechanism as claimed in claim 1, characterized in that The resistance torque structure is an adjustable resistance torque structure, which can adjust the torque threshold.

3. A vehicle-mounted ceiling screen mechanism as claimed in claim 2, characterized in that The resistance torque structure includes a first friction component that rotates synchronously with the output shaft and a second friction component that can rotate relative to the output shaft. The first friction component and the second friction component are pressed by an elastic element. The resistance torque structure is also provided with an element for adjusting the force value of the elastic element or the elastic element is replaceable.

4. A vehicle-mounted ceiling screen mechanism as claimed in claim 2, characterized in that The resistance torque structure includes a first friction component that rotates synchronously with the drive shaft and a second friction component that can rotate relative to the drive shaft. The first friction component and the second friction component are pressed by an elastic element. The first friction component, the second friction component and the elastic element are all sleeved on the output shaft. The resistance torque structure is also provided with a nut for adjusting the force value of the elastic element.

5. A vehicle-mounted ceiling screen mechanism as claimed in claim 3 or 4, characterized in that The second friction component is a structure on the screen connecting member, and is located on one side of the structure in which the screen connecting member is rotatably connected to the output shaft.

6. The vehicle-mounted ceiling screen mechanism according to claim 1, characterized in that It is also provided with an output shaft damping structure to prevent the output shaft from shaking at small forces and eliminate shaking caused by hollow stroke or virtual displacement of the drive component.

7. A vehicle-mounted ceiling screen mechanism as claimed in claim 6, characterized in that The hollow stroke or virtual displacement of the driving assembly includes the gap between parts inside the reduction mechanism.

8. The vehicle-mounted ceiling screen mechanism according to claim 6, characterized in that The output shaft damping structure includes a reed tube, the reed tube is connected to a fixed structure, and the reed tube clamps the output shaft.

9. A vehicle-mounted ceiling screen mechanism as claimed in claim 8, characterized in that The reed tube is provided with a connecting handle, which is connected to the housing of the reduction mechanism. The output shaft is connected to the final gear of the reduction structure, and the reed tube clamps the part of the output shaft that is inside the housing of the reduction mechanism. The connecting handle is also connected to a limiting sleeve, which is sleeved on the part of the output shaft that is inside the housing of the reduction mechanism.

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