One-way damping rotating shaft mechanism capable of being applied to vehicle-mounted ceiling screen

Abstract

The one-way damping rotating shaft mechanism capable of being applied to the vehicle-mounted ceiling screen comprises a mounting structure, a driving motor, a display screen connecting structure, a damping mechanism and a clutch mechanism, the damping mechanism is connected with a motor shaft through the clutch mechanism, and is connected with a driving shaft in the rotating direction corresponding to the opening direction of the display screen from top to bottom; and the connection with the driving shaft is disconnected in the closing rotation direction of the corresponding display screen from bottom to top. The damping mechanism is connected into the rotating system in the rotating opening direction of the display screen, and the damping mechanism and the rotating system are disconnected in the rotating closing direction of the display screen, so that the damping mechanism is not hindered to play a role when the display screen hovers, and meanwhile, the situation that the motor needs to overcome the resistance of the damping mechanism and the gravity of the display screen at the same time is avoided; and the requirement on the motor is reduced. Moreover, according to the scheme provided by the utility model, the structure only extends in the axial direction, so that the area of the roof in the length direction can be prevented from being occupied, and the miniaturization of the structure is facilitated.

Description

Technical Field

[0001] The utility model relates to a one-way damping rotating shaft mechanism, in particular to a one-way damping rotating shaft mechanism applied to a vehicle-mounted ceiling screen. Background Art

[0002] The mounting structure of a vehicle-mounted ceiling display screen includes a top mounting plate and a display screen. A display screen rotation drive motor is provided on the top mounting plate. The display screen is driven by the motor to rotate downward to open and upward to close. A damping mechanism may also be provided to help protect the motor when the display screen is in a hovering state. When the display screen rotates downward to open, the gravity of the display screen is consistent with the direction of the motor's work. However, when the display screen rotates upward to close, the gravity of the display screen acts as resistance in the opposite direction of the motor's work. Therefore, if a damping mechanism is provided, the motor needs to match the gravity of the display screen and the resistance generated by the damping structure, which increases the requirements for the motor. Utility Model Content

[0003] The problem to be solved by this utility model is to provide a one-way damping shaft mechanism applicable to vehicle-mounted ceiling screens, which can ensure that the damping structure works when the screen is hovering while reducing the requirements for the motor. To this end, this utility model adopts the following technical solutions:

[0004] A one-way damping shaft mechanism that can be used for a vehicle-mounted ceiling screen includes a mounting structure, a drive motor, and a display screen connection structure. The drive motor is connected to the mounting structure, the display screen connection structure is connected to the drive shaft, and the drive shaft is connected to the drive motor. It is characterized in that the one-way damping shaft mechanism is provided with a damping mechanism and a clutch mechanism. The damping mechanism is connected to the drive shaft through the clutch mechanism, and is connected to the drive shaft in the rotation direction corresponding to the display screen opening from top to bottom, and is disconnected from the drive shaft in the closing rotation direction corresponding to the display screen from bottom to top.

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

[0006] The drive shaft is output from both ends, the display screen connection structure is connected to the first end, and the clutch mechanism is connected to the second end.

[0007] The clutch mechanism includes a connecting shaft and a clutch structure, the clutch structure is connected between the connecting shaft and the driving shaft, and the damping mechanism is connected to the connecting shaft.

[0008] The clutch structure includes a one-way bearing, a first transition structure and a second transition structure. One of the inner ring or outer ring of the one-way bearing is connected to the first transition structure, and the first transition structure is connected to the drive shaft. The other of the inner ring or outer ring of the one-way bearing is connected to the second transition structure, and the second transition structure is connected to the connecting shaft.

[0009] The connecting shaft and the driving shaft are coaxial.

[0010] The inner ring of the one-way bearing is connected to the first transition structure, one end of the first transition structure is provided with a connecting section which is interference-connected with the inner ring, and the other end of the first transition structure is provided with a structure connected to the drive shaft; the outer ring of the one-way bearing is connected to the second transition structure, and the second transition structure includes a connecting sleeve with an end connecting structure, the connecting shaft and the second transition structure are integrated and connected to the end connecting structure, and the connecting sleeve is interference-fitted with the outer ring.

[0011] The damping mechanism adopts a friction structure, which includes a first friction component that rotates synchronously with the connecting shaft and a second friction component that can rotate relative to the connecting shaft, and the first friction component and the second friction component are pressed by an elastic element.

[0012] The end of the connecting shaft is threadedly connected to a nut, the elastic element, the first friction component and the second friction component are sleeved on the connecting shaft, and the elastic element is adjusted by the nut.

[0013] The second friction component is a part of a fixing frame that supports the damping part. The fixing frame is sleeved outside the connecting shaft and connected to the mounting mechanism. The outer end of the fixing frame serves as the second friction component.

[0014] Due to the technical solution of this utility model, the damping mechanism is connected to the rotating system when the display screen rotates open, and disconnected from the rotating system when the screen rotates closed. This does not hinder the damping mechanism from functioning when the display screen is hovering, and also avoids the motor having to overcome both the resistance of the damping mechanism and the weight of the display screen, thus reducing the requirements for the motor. Furthermore, the solution provided by this utility model only extends the structure in the axial direction, which avoids occupying the area along the length of the roof and also contributes to the miniaturization of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a side view of the embodiment provided by the present invention when the display screen is in a closed state.

[0016] Figure 2 This is a side view of the embodiment provided by the present invention when the display screen is in the open state.

[0017] Figure 3This is a front view of the embodiment provided by the utility model when the display screen is in the open state.

[0018] Figure 4 This is a structural cross-sectional view of the one-way damping shaft mechanism in the embodiment provided by the utility model.

[0019] Figure 5 This is an exploded view of the structure of the one-way damping shaft mechanism in the embodiment provided by the utility model.

[0020] Figure 6 This is a schematic diagram of the assembly of the one-way damping shaft mechanism in the embodiment provided by the utility model. DETAILED DESCRIPTION

[0021] Referring to the accompanying drawings, the present invention provides a one-way damping shaft mechanism applicable to a vehicle-mounted ceiling screen, comprising a mounting structure 100, a drive motor 1, and a display screen connection structure 200. The mounting structure 100 may be a mounting plate connected to the vehicle roof frame. The display screen connection structure 200 may be a connection plate with a structure for connecting a drive shaft and a structure for connecting a display screen 300. The drive motor 1 is connected to the mounting structure 100, and the display screen connection structure 200 is connected to the drive shaft, which is connected to the drive motor 1. The one-way damping shaft mechanism includes a damping mechanism and a clutch mechanism. The damping mechanism is connected to the motor shaft via the clutch mechanism and is connected to the drive shaft in the direction corresponding to the display screen opening from top to bottom. The connection with the drive shaft is disconnected in the direction corresponding to the display screen closing from bottom to top. Thus, when rotating downward to open, the drive motor 1 must overcome a force equal to the resistance of the damping structure minus gravity. When rotating upward to close, the drive motor 1 must overcome only gravity, reducing the requirements for the drive motor 1. In the hovering stage, the resistance in the opening direction provided by the damping mechanism can effectively protect the drive motor 1 and its reduction mechanism.

[0022] A preferred embodiment is further introduced below, which enables the provided solution to extend the structure only in the axial direction, thereby avoiding occupying the area in the length direction of the roof and also contributing to miniaturization of the structure.

[0023] The drive shaft is output from both ends, the display screen connection structure 200 is connected to the first end 11 of the drive shaft, and the clutch mechanism is connected to the second end 12 of the drive shaft.

[0024] The clutch mechanism includes a connecting shaft 2 and a clutch structure, wherein the clutch structure is connected between the connecting shaft 2 and the drive shaft, and the damping mechanism is connected to the connecting shaft 2. The connecting shaft 2 and the drive shaft are coaxial, but may not be on the same axis if necessary.

[0025] The clutch structure includes a one-way bearing 3, a first transition structure and a second transition structure. Preferably, the inner ring of the one-way bearing 3 is connected to the first transition structure 4, the first transition structure 4 is connected to the second end 12 of the drive shaft, and the outer ring of the one-way bearing 3 is connected to the second transition structure 5, and the second transition structure 5 is connected to the connecting shaft 2. Not only is the connection volume small, but the manufacturing can also be simplified by setting the first transition structure and the second transition structure.

[0026] One end of the first transition structure 4 is provided with a connecting section 41 which is interference-connected with the inner ring, and the other end is provided with a structure 42 which is connected to the second end 12 of the drive shaft; the second transition structure includes a connecting sleeve with an end connecting structure, the connecting shaft 2 and the second transition structure 5 are arranged as a whole and connected to the end connecting structure, and the connecting sleeve is interference-fitted with the outer ring 32.

[0027] The damping mechanism adopts a friction structure, which includes a first friction component 61 that rotates synchronously with the connecting shaft 2 and a second friction component 62 that can rotate relative to the connecting shaft, and the first friction component 61 and the second friction component 62 are pressed together by an elastic element 63. The first friction component 61 and the second friction component 62 can both be friction plates and are sleeved on the connecting shaft 2. The end of the connecting shaft is threadedly connected to a nut 64, and the elastic element 63 is sleeved on the connecting shaft 2, and the elastic element 63 is adjusted by the nut 64. The elastic element 63 can be a disc spring assembly. The second friction component 62 can be part of the fixing frame 6 that supports the damping part. The fixing frame 6 is sleeved on the outside of the connecting shaft 2 and is connected to the mounting mechanism 100. Its outer end serves as the second friction component 62.

[0028] The damping mechanism can also be designed as a "disc spring-cam torque mechanism" as needed to achieve multi-stage variable force functions such as increasing the cam climbing force value / decreasing the cam downhill force value. The damping structure can also adopt a friction structure such as a reed tube structure.

[0029] During implementation, both sides of the display screen are connected to a set of one-way damping shaft mechanisms of the present invention, and the sum of the resistance torques provided by the two sets of damping mechanisms constitutes the hovering force.

[0030] 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 this field within the field of the present invention are included in the protection scope of the present invention.

[0031] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention 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 internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] In the description of this utility model, it should be understood that terms such as "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," and "right" are used to indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are used solely to facilitate the description of this utility model and to simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used solely for brevity of description and do not indicate or imply relative importance.

Claims

1. A one-way damping shaft mechanism applicable to a vehicle-mounted ceiling screen, comprising a mounting structure, a drive motor, and a display screen connection structure, wherein the drive motor is connected to the mounting structure, the display screen connection structure is connected to the drive shaft, and the drive shaft is connected to the drive motor; The one-way damping shaft mechanism is provided with a damping mechanism and a clutch mechanism. The damping mechanism is connected to the driving shaft through the clutch mechanism, and is connected to the driving shaft in the rotation direction corresponding to the display screen opening from top to bottom, and is disconnected from the driving shaft in the closing rotation direction corresponding to the display screen from bottom to top.

2. A one-way damping shaft mechanism applicable to a vehicle-mounted ceiling screen as claimed in claim 1, characterized in that The drive shaft is output from both ends, the display screen connection structure is connected to the first end, and the clutch mechanism is connected to the second end.

3. A one-way damping shaft mechanism applicable to a vehicle-mounted ceiling screen as claimed in claim 1 or 2, characterized in that The clutch mechanism includes a connecting shaft and a clutch structure, the clutch structure is connected between the connecting shaft and the driving shaft, and the damping mechanism is connected to the connecting shaft.

4. A one-way damping shaft mechanism applicable to a vehicle-mounted ceiling screen as claimed in claim 3, characterized in that The clutch structure includes a one-way bearing, a first transition structure and a second transition structure. One of the inner ring or outer ring of the one-way bearing is connected to the first transition structure, and the first transition structure is connected to the drive shaft. The other of the inner ring or outer ring of the one-way bearing is connected to the second transition structure, and the second transition structure is connected to the connecting shaft.

5. The one-way damping shaft mechanism applicable to a vehicle-mounted ceiling screen as claimed in claim 3, characterized in that The connecting shaft and the driving shaft are coaxial.

6. The one-way damping shaft mechanism applicable to a vehicle-mounted ceiling screen as claimed in claim 4, characterized in that The inner ring of the one-way bearing is connected to the first transition structure, one end of the first transition structure is provided with a connecting section which is interference-connected with the inner ring, and the other end of the first transition structure is provided with a structure connected to the drive shaft; the outer ring of the one-way bearing is connected to the second transition structure, and the second transition structure includes a connecting sleeve with an end connecting structure, the connecting shaft and the second transition structure are integrated and connected to the end connecting structure, and the connecting sleeve is interference-fitted with the outer ring.

7. The one-way damping shaft mechanism applicable to a vehicle-mounted ceiling screen as claimed in claim 3, characterized in that The damping mechanism adopts a friction structure, which includes a first friction component that rotates synchronously with the connecting shaft and a second friction component that can rotate relative to the connecting shaft, and the first friction component and the second friction component are pressed by an elastic element.

8. The one-way damping shaft mechanism applicable to a vehicle-mounted ceiling screen as claimed in claim 7, characterized in that The end of the connecting shaft is threadedly connected to a nut, the elastic element, the first friction component and the second friction component are sleeved on the connecting shaft, and the elastic element is adjusted by the nut.

9. The one-way damping shaft mechanism applicable to a vehicle-mounted ceiling screen as claimed in claim 7, characterized in that The second friction component is a part of a fixing frame that supports the damping part. The fixing frame is sleeved outside the connecting shaft and connected to the mounting structure. The outer end of the fixing frame serves as the second friction component.

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