Turnover device of vehicle-mounted ceiling screen and mounting structure of vehicle-mounted ceiling screen

Abstract

The embodiment of the utility model relates to a turnover device of a vehicle-mounted ceiling screen and a mounting structure of the vehicle-mounted ceiling screen. The turnover device of the vehicle-mounted ceiling screen comprises a motor, a gear box, a rotating shaft and a fixing frame. The motor is in transmission connection with the rotating shaft through the gear box; the fixing frame is arranged on the rotating shaft, and the fixing frame is used for fixing a vehicle-mounted ceiling screen; the gearbox comprises a shell and a five-stage gear transmission mechanism arranged in the shell. According to the embodiment of the utility model, through the position layout of the motor on the shell of the gear box and the structural design of the five-stage gear transmission mechanism in the shell of the gear box, the overall occupied space of the motor and the gear box is small, and the transmission torque which is large enough is provided to drive the vehicle-mounted ceiling screen to turn over.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of vehicle-mounted ceiling screens, in particular to a flipping device for a vehicle-mounted ceiling screen and a mounting structure for a vehicle-mounted ceiling screen. Background Art

[0002] At present, vehicle-mounted ceiling screen devices are equipped on most vehicles. The vehicle-mounted ceiling screen is mainly used to display entertainment and vehicle status information. The vehicle-mounted ceiling screen is arranged on the vehicle roof through a vehicle-mounted ceiling screen mounting seat, and a flipping device is arranged on the vehicle-mounted ceiling screen mounting seat to flip the vehicle-mounted ceiling screen so that the vehicle-mounted ceiling screen can be flipped to a suitable angle, facilitating the user to view the screen at the best angle and enhancing the user experience. The existing flipping devices for vehicle-mounted ceiling screens usually include structures such as a motor, a gearbox, and a rotating shaft. The rotating shaft is rotated electrically through the transmission of the motor and the gearbox to realize the flipping of the vehicle-mounted ceiling screen.

[0003] Under vehicle regulations requirements, vehicle-mounted components are required to be stable and durable under different working conditions. With the increasing trend of vehicle-mounted electronics, requirements for vehicle-mounted ceiling screens include being ultra-thin and having strong rigidity; and the gearbox of the flipping device for the vehicle-mounted ceiling screen also needs to be miniaturized to be installed in a limited space, and needs to have a large enough torque to achieve rigid support for the ceiling screen and keep the vehicle-mounted ceiling screen stable without shaking in the shaking environment of vehicle driving. This is a difficulty for the existing flipping devices for vehicle-mounted ceiling screens. Summary of the Utility Model

[0004] Based on this, the purpose of the embodiment of the utility model is to provide a flipping device for a vehicle-mounted ceiling screen. Through the position layout of the motor on the housing of the gearbox and the structural design of the five-stage gear transmission mechanism inside the housing of the gearbox, the overall space occupied by the motor and the gearbox is small, and there is a large enough transmission torque to drive the flipping of the vehicle-mounted ceiling screen.

[0005] To achieve the above purpose, the embodiment of the utility model adopts the following technical solutions:

[0006] A flipping device for an in-vehicle ceiling screen, comprising a motor, a gearbox, a rotating shaft and a fixing bracket; the motor is in transmission connection with the rotating shaft through the gearbox; the fixing bracket is arranged on the rotating shaft, and the fixing bracket is used for fixing the in-vehicle ceiling screen; wherein, the gearbox comprises a housing and a five-stage gear transmission mechanism arranged in the housing, and the five-stage gear transmission mechanism comprises a first transmission shaft, a second transmission shaft, a third transmission shaft, a fourth transmission shaft, a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear, a seventh gear, an eighth gear, a ninth gear and a tenth gear; the motor is fixedly arranged at one end of the housing, and an output shaft of the motor penetrates through an end wall of the housing and extends into the housing; the rotating shaft is rotatably arranged at the other end of the housing, one end of the rotating shaft penetrates through a side wall of the other end of the housing, and the other end of the rotating shaft extends in a direction away from the housing; the first transmission shaft is rotatably arranged inside an end wall at one end of the housing, and the first transmission shaft is parallel to the output shaft of the motor; the second transmission shaft, the third transmission shaft and the fourth transmission shaft are sequentially and spacedly arranged in an area between the end of the output shaft of the motor and the rotating shaft, and are respectively rotatably arranged between two side walls of the housing; the second transmission shaft, the third transmission shaft and the output shaft of the motor are all spacedly arranged on the same side of the first transmission shaft; the first gear is fixedly sleeved on the output shaft of the motor; the second gear and the third gear are coaxially and fixedly sleeved on the first transmission shaft, and the second gear meshes with the first gear; the fourth gear and the fifth gear are coaxially and fixedly sleeved on the second transmission shaft, and the fourth gear meshes with the third gear; the sixth gear and the seventh gear are coaxially and fixedly sleeved on the third transmission shaft, and the sixth gear meshes with the fifth gear; the eighth gear and the ninth gear are coaxially and fixedly sleeved on the fourth transmission shaft, and the eighth gear meshes with the seventh gear; the tenth gear is fixedly sleeved on the rotating shaft, and the tenth gear meshes with the ninth gear.

[0007] For the flipping device of the in-vehicle ceiling screen according to the embodiment of the present utility model, through the position layout of the motor on the housing of the gearbox and the structural design of the five-stage gear transmission mechanism inside the housing of the gearbox, the overall occupied space of the motor and the gearbox is small, and there is a large enough transmission torque to drive the flipping of the in-vehicle ceiling screen.

[0008] As a preferred solution of the embodiment of the present utility model, the reduction ratio of the first gear and the second gear is 34 / 11; the reduction ratio of the third gear and the fourth gear is 15.5 / 1; the reduction ratio of the fifth gear and the sixth gear is 31 / 12; the reduction ratio of the seventh gear and the eighth gear is 23 / 11; the reduction ratio of the ninth gear and the tenth gear is 27 / 13. Designing the transmission relationship of each gear as the above transmission ratio can provide a large enough transmission torque to stably drive the rotation of the rotating shaft, thereby stably driving the flipping of the fixed frame and the in-vehicle ceiling screen.

[0009] As a preferred solution of the embodiment of the present utility model, the first gear is a helical gear, with a module of 0.5 mm, 11 teeth, a pitch circle diameter of 7 mm, and the material is brass; the second gear is a helical gear, with a module of 0.5 mm, 34 teeth, a pitch circle diameter of 18.6 mm, and the material is POM; the third gear is a worm, with a module of 0.5 mm, 2 teeth, a pitch circle diameter of 7.7 mm, and the material is stainless steel; the fourth gear is a helical gear, with a module of 0.5 mm, 31 teeth, a pitch circle diameter of 16.7 mm, and the material is brass; the fifth gear is a spur gear, with a module of 0.5 mm, 12 teeth, a pitch circle diameter of 7.5 mm, and the material is FN0405; the sixth gear is a spur gear, with a module of 0.5 mm, 31 teeth, a pitch circle diameter of 16.4 mm, and the material is FN0405; the seventh gear is a spur gear, with a module of 0.6 mm, 11 teeth, a pitch circle diameter of 8.3 mm, and the material is FN0405; the eighth gear is a spur gear, with a module of 0.6 mm, 23 teeth, a pitch circle diameter of 14.6 mm, and the material is FN0405; the ninth gear is a spur gear, with a module of 0.6 mm, 13 teeth, a pitch circle diameter of 9.4 mm, and the material is FN0405; the tenth gear is a spur gear, with a module of 0.6 mm, 27 teeth, a pitch circle diameter of 17.2 mm, and the material is FN0405. By designing and selecting the dimensions and materials of each gear, the compatibility between the gears is improved, and while reducing the volume of the gearbox, a large enough transmission torque is provided.

[0010] As a preferred solution of the embodiment of the present utility model, the housing of the gearbox includes a first housing part and a second housing part; the first housing part is L-shaped and includes a first housing plate and a second housing plate vertically arranged on the first housing plate; the second housing part covers the first housing part and is detachably and fixedly connected to the first housing plate and the second housing plate respectively, and the first housing part and the second housing part enclose an internal space of the housing; the motor is fixedly arranged outside the second housing plate, and an output end of the motor passes through the second housing plate and extends into the housing; a bearing part parallel to the second housing plate is arranged in the middle of the inner side of the first housing plate, and the first transmission shaft is rotatably arranged between the second housing plate and the bearing part; one end of the rotating shaft passes through the other end of the first housing plate and extends into the housing, and is rotatably arranged on the first housing plate, and the other end of the rotating shaft extends in a direction away from the second housing part; the rotating shaft is parallel to the second housing plate; the second transmission shaft, the third transmission shaft, and the fourth transmission shaft are all parallel to the rotating shaft; one ends of the second transmission shaft, the third transmission shaft, and the fourth transmission shaft are respectively rotatably arranged on the first housing plate at intervals in sequence, and the other ends of the second transmission shaft, the third transmission shaft, and the fourth transmission shaft are respectively rotatably arranged on the second housing part; the third transmission shaft is arranged beside the bearing part. Through the design of the specific structure of the housing of the gearbox in the embodiment of the present utility model, the layout of each component of the five-stage gear transmission mechanism arranged inside the housing of the gearbox is more compact and reasonable, the space occupied by the five-stage gear transmission mechanism can be effectively reduced, and thus the space occupied by the housing can be smaller.

[0011] As a preferred solution of the embodiment of the present utility model, a first connection part is arranged on the outer side of the first housing plate, and a second connection part is arranged on the outer side of the second housing part. The first connection part and the second connection part are used to install and connect the gearbox on the in-vehicle ceiling screen mounting seat.

[0012] As a preferred solution of the embodiment of the present utility model, the flipping device of the in-vehicle ceiling screen further includes a damping bracket. The damping bracket is sleeved on the rotating shaft with a gap and is fixed outside the housing. A limiting protrusion is arranged on the outer periphery of the damping bracket. By designing the limiting protrusion on the outer periphery of the damping bracket, when the in-vehicle ceiling screen is flipped to the limiting angle, the limiting structure on the in-vehicle ceiling screen can be abutted against the limiting protrusion on the damping bracket to limit the flipping of the in-vehicle ceiling screen.

[0013] As a preferred solution of an embodiment of the present utility model, the flipping device of the vehicle-mounted ceiling screen further includes a damping assembly, and the damping assembly includes a first elastic member and a first adjusting member sleeved on the rotating shaft; the distance between the first adjusting member and the damping bracket is adjustable; the first elastic member is clamped between the damping bracket and the first adjusting member. When the motor stops working, generally the rotating shaft cannot rotate at this time, but the rotating shaft usually still has an angular deflection amplitude within 5°. Even when the motor stops working, due to the angular deflection amplitude within 5° of the rotating shaft, the vehicle-mounted ceiling screen will also produce a small amplitude of shaking. In the embodiment of the present utility model, in order to overcome the angular deflection amplitude within 5° of the rotating shaft after the motor stops working, a damping assembly is arranged on the rotating shaft, and the damping assembly provides a damping force to limit the angular deflection of the rotating shaft after the motor stops working, so that the vehicle-mounted ceiling screen is stable and does not shake, especially suitable for keeping the vehicle-mounted ceiling screen stable and not shaking in a shaking vehicle driving environment.

[0014] As a preferred solution of an embodiment of the present utility model, the flipping device of the vehicle-mounted ceiling screen further includes a clutch assembly, and the clutch assembly includes a second elastic member and a second adjusting member sleeved on the rotating shaft; a stepped portion is provided on the rotating shaft, the distance between the second adjusting member and the stepped portion is adjustable, and the fixed bracket and the second elastic member are clamped between the stepped portion and the second adjusting member. The fixed bracket is used to fix the vehicle-mounted ceiling screen. By arranging the clutch assembly on the rotating shaft, the flipping device of the vehicle-mounted ceiling screen can not only realize the electric flipping of the vehicle-mounted ceiling screen, but also realize the manual flipping of the vehicle-mounted ceiling screen.

[0015] As a preferred solution of an embodiment of the present utility model, the damping assembly is located between the clutch assembly and the damping bracket, and the stepped portion is provided in the position area of the rotating shaft between the damping assembly and the clutch assembly; the fixed bracket is L-shaped and includes a first fixing plate and a second fixing plate vertically arranged on the first fixing plate. The first fixing plate is sleeved on the rotating shaft, and the second fixing plate extends in a direction away from the gearbox. The second fixing plate is used to fix the vehicle-mounted ceiling screen. Such a design facilitates the fixed bracket to better fix the vehicle-mounted ceiling screen.

[0016] The embodiment of the present utility model further provides a vehicle-mounted ceiling screen installation structure, including the flipping device of the vehicle-mounted ceiling screen described in any one of the above. The flipping device of the vehicle-mounted ceiling screen in the embodiment of the present utility model is used in the vehicle-mounted ceiling screen installation structure, which can reduce the space occupied by the motor and the gearbox, and at the same time can provide a large enough transmission torque to drive the flipping of the vehicle-mounted ceiling screen.

[0017] For better understanding and implementation, the embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0018] Figure 1 This is a schematic structural view of one perspective of the in-vehicle ceiling screen mounting structure according to an embodiment of the present utility model;

[0019] Figure 2 It is Figure 1 a schematic structural view of another perspective of;

[0020] Figure 3 This is a schematic structural view of one perspective of the flipping device of the in-vehicle ceiling screen according to an embodiment of the present utility model;

[0021] Figure 4 It is Figure 2 a schematic structural view of another perspective of;

[0022] Figure 5 This is an explosion schematic view of the gearbox;

[0023] Figure 6 This is a schematic transmission structure view of the motor, gearbox and rotating shaft;

[0024] Figure 7 It is Figure 6 a schematic structural view of another perspective of;

[0025] Figure 8 This is a schematic transmission structure view of the motor and gearbox;

[0026] Figure 9 This is a schematic structural view of one perspective of the damping component, clutch component and fixing bracket;

[0027] Figure 10 This is a schematic structural view of another perspective of the damping component, clutch component and fixing bracket;

[0028] Wherein: the flipping device 1 of the in-vehicle ceiling screen, the motor 11; the gearbox 12; the housing 121; the first housing part 1211; the first housing plate 12111; the second housing plate 12112; the second housing part 1212; the bearing part 1213; the first connecting part 1214; the second connecting part 1215; the five-stage gear transmission mechanism 122; the first transmission shaft 1221, the second transmission shaft 1222, the third transmission shaft 1223, the fourth transmission shaft 1224, the first gear 1231, the second gear 1232, the third gear 1233, the fourth gear 1234, the fifth gear 1235, the sixth gear 1236, the seventh gear 1237, the eighth gear 1238, the ninth gear 1239, the tenth gear 1230; the rotating shaft 13; the stepped part 131; the first rotating shaft section 132; the second rotating shaft section 133; the fixing frame 14; the first fixing plate 141; the second fixing plate 142; the damping bracket 15; the limiting protrusion 151; the damping assembly 16; the first elastic member 161; the first adjusting member 162; the first flat gasket 163; the second flat gasket 164; the clutch assembly 17; the second elastic member 171, the second adjusting member 172; the third flat gasket 173; the fourth flat gasket 174; the fifth flat gasket 175; the in-vehicle ceiling screen mounting seat 2; the flipping device mounting groove 21; the in-vehicle ceiling screen mounting groove 22. Detailed implementation manners

[0029] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the embodiments of the present utility model.

[0030] In addition, the terms first, second, third, etc. in the description and claims are only used for the purpose of differentiating the description of the same technical features, and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features, nor necessarily describing the order or time sequence. The terms can be interchanged where appropriate. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0031] Similarly, the term "connection" is also used in the description and claims and should not be construed as limited to direct connection. Therefore, the expression "device A is connected to device B" should not be limited to device A being directly connected to device B in the device or system. It means that there is a path between device A and device B, which can be a path including other devices or tools.

[0032] See also Figure 1 and Figure 2 In the vehicle ceiling screen installation structure, most vehicles are equipped with a vehicle ceiling screen (not shown), which is mainly used to display entertainment and vehicle status information. The vehicle ceiling screen is arranged on the ceiling screen mounting seat 2 of the roof crossbeam, and the vehicle ceiling screen is flipped by setting a flip device 1 to flip the vehicle ceiling screen to a suitable angle, so that the user can watch the screen at the best angle and improve the user's experience.

[0033] The existing flipping device of the vehicle-mounted ceiling screen usually includes structures such as a motor, a gear box, and a rotating shaft. The motor and the gear box drive the rotating shaft to rotate to realize the flipping of the vehicle-mounted ceiling screen. Under the automotive grade requirements, the vehicle-mounted components are required to be stable and durable under different working conditions. With the increasing trend of vehicle-mounted electronics, the vehicle-mounted ceiling screen needs to be ultra-thin and rigid. The gear box of the flipping device of the vehicle-mounted ceiling screen also needs to be miniaturized so that it can be installed in the flipping device mounting groove 21 of the ceiling screen mounting seat 2 with limited space, and it needs to have a large enough torque to achieve rigid support for the ceiling screen and keep the vehicle-mounted ceiling screen stable in a shaking car driving environment. This is the difficulty of the existing flipping device of the vehicle-mounted ceiling screen.

[0034] Therefore, the present invention provides a flip device for a vehicle-mounted ceiling screen. Figure 3 and Figure 4 , including a motor 11, a gear box 12, a rotating shaft 13, and a fixing frame 14; the motor 11 is connected to the rotating shaft 13 through the gear box 12; the fixing frame 14 is arranged on the rotating shaft 13, and the fixing frame 14 is used to fix the vehicle-mounted ceiling screen. Figure 5 The gear box 12 includes a housing 121 and a five-stage gear transmission mechanism 122 disposed in the housing. Figures 5 - 8, the five - stage gear transmission mechanism 122 includes a first transmission shaft 1221, a second transmission shaft 1222, a third transmission shaft 1223, a fourth transmission shaft 1224, a first gear 1231, a second gear 1232, a third gear 1233, a fourth gear 1234, a fifth gear 1235, a sixth gear 1236, a seventh gear 1237, an eighth gear 1238, a ninth gear 1239 and a tenth gear 1230; the motor 11 is fixedly arranged at one end of the housing 121, and the output shaft of the motor 11 passes through the end wall of the housing 121 and extends into the housing 121; the rotating shaft 13 is rotatably arranged at the other end of the housing 121, one end of the rotating shaft 13 penetrates through the side wall of the other end of the housing 121, and the other end of the rotating shaft 13 extends in a direction away from the housing 121; the first transmission shaft 1221 is rotatably arranged inside the end wall at one end of the housing 121, and the first transmission shaft 1221 is parallel to the output shaft of the motor 11; the second transmission shaft 1222, the third transmission shaft 1223 and the fourth transmission shaft 1224 are sequentially and spaced apart in the area between the end of the output shaft of the motor 11 and the rotating shaft 13, and are respectively rotatably arranged between the two side walls of the housing 121; the second transmission shaft 1222, the third transmission shaft 1223 and the output shaft of the motor 11 are all spaced apart on the same side of the first transmission shaft 1221; the first gear 1231 is fixedly sleeved on the output shaft of the motor 11; the second gear 1232 and the third gear 1233 are coaxially and fixedly sleeved on the first transmission shaft 1221, and the second gear 1232 meshes with the first gear 1231; the fourth gear 1234 and the fifth gear 1235 are coaxially and fixedly sleeved on the second transmission shaft 1222, and the fourth gear 1234 meshes with the third gear 1233; the sixth gear 1236 and the seventh gear 1237 are coaxially and fixedly sleeved on the third transmission shaft 1223, and the sixth gear 1236 meshes with the fifth gear 1235; the eighth gear 1238 and the ninth gear 1239 are coaxially and fixedly sleeved on the fourth transmission shaft 1224, and the eighth gear 1238 meshes with the seventh gear 1237; the tenth gear 1230 is fixedly sleeved on the rotating shaft 13, and the tenth gear 1230 meshes with the ninth gear 1239. In the flipping device of the in - vehicle ceiling screen according to the embodiment of the present utility model, through the position layout of the motor 11 on the housing 121 of the gearbox 12 and the structural design of the five - stage gear transmission mechanism 122 inside the housing 121 of the gearbox 12, the overall occupied space of the motor 11 and the gearbox 12 is small, and there is a large enough transmission torque to drive the in - vehicle ceiling screen to flip.

[0035] Among them, in the embodiment of the present utility model, the motor 11 is fixedly arranged at one end of the housing 121, and the rotating shaft 13 penetrates through and is arranged at the other end of the housing 121, thereby avoiding arranging the motor 11 on the side of the housing 121, reducing the width of the overall structure of the motor 11 and the gearbox 12, and thus reducing the width required for the motor 11 and the gearbox 12 to be installed in the installation cavity of the in-vehicle ceiling screen mounting seat 2 with limited space, and reducing the installation space. In addition, by designing the structure of the five-stage gear transmission mechanism 122 in the housing 121 of the gearbox 12, the first transmission shaft 1221 is rotatably arranged inside the end wall at one end of the housing 121, and the first transmission shaft 1221 is parallel to the output shaft of the motor 11; the second transmission shaft 1222, the third transmission shaft 1223, and the fourth transmission shaft 1224 are respectively arranged at intervals in sequence in the area between the end of the output shaft of the motor 11 and the rotating shaft 13, and are respectively rotatably arranged between both sides inside the housing 121; the output shafts of the second transmission shaft 1222, the third transmission shaft 1223, and the motor 1224 are all arranged on the same side of the first transmission shaft 1221, so that after each transmission shaft is installed with each gear, the structure is more compact. While the volume of the gearbox 12 is reduced, a sufficiently large transmission torque can also be provided.

[0036] In the embodiment of the present utility model, preferably, the rotating shaft 13 is vertically arranged relative to the output shaft of the motor 14; the second transmission shaft 1222, the third transmission shaft 1223, and the fourth transmission shaft 1224 are respectively parallel to the rotating shaft 13. The length of the first transmission shaft 1221 is greater than the length of the output shaft of the motor 11, so as to make the transmission structure between the output shaft of the motor 11 and the first gear 1231 arranged thereon, the first transmission shaft 1221 and the second gear 1232 and the third gear 1233 arranged thereon, and the fourth gear 1234 and the fifth gear 1235 arranged on the second transmission shaft 1222 more compact, the space utilization more reasonable, reduce the required space, and thus reduce the volume of the gearbox.

[0037] A first-stage gear train transmission relationship is formed between the first gear 1231 and the second gear 1232, a second-stage gear train transmission relationship is formed between the third gear 1233 and the fourth gear 1234, a third-stage gear train transmission relationship is formed between the fifth gear 1235 and the sixth gear 1236, a fourth-stage gear train transmission relationship is formed between the seventh gear 1237 and the eighth gear 1238, and a fifth-stage gear train transmission relationship is formed between the ninth gear 1239 and the tenth gear 1230. In order to provide a sufficiently large transmission torque to stably drive the rotation of the rotating shaft 13, thereby stably driving the fixing frame 14 and the in-vehicle ceiling screen to flip. In the embodiment of the present invention, the reduction ratio of the first gear 1231 and the second gear 1232 is 34 / 11; the reduction ratio of the third gear 1233 and the fourth gear 1234 is 15.5 / 1; the reduction ratio of the fifth gear 1235 and the sixth gear 1235 is 31 / 12; the reduction ratio of the seventh gear 1237 and the eighth gear 1238 is 23 / 11; the reduction ratio of the ninth gear 1239 and the tenth gear 1230 is 27 / 13. Designing each gear train with the above transmission ratios can provide a sufficiently large transmission torque.

[0038] As a preferred solution of the embodiment of the present invention, the first gear 1231 is a helical gear, with a module of 0.5 mm, 11 teeth, a tip circle of 7 mm, and the material is brass; the second gear 1232 is a helical gear, with a module of 0.5 mm, 34 teeth, a tip circle of 18.6 mm, and the material is POM; the third gear 1233 is a worm, with a module of 0.5 mm, 2 teeth, a tip circle of 7.7 mm, and the material is stainless steel; the fourth gear 1234 is a helical gear, with a module of 0.5 mm, 31 teeth, a tip circle of 16.7 mm, and the material is brass; the fifth gear 1235 is a spur gear, with a module of 0.5 mm, 12 teeth, a tip circle of 7.5 mm, and the material is FN0405; the sixth gear 1236 is a spur gear, with a module of 0.5 mm, 31 teeth, a tip circle of 16.4 mm, and the material is FN0405; the seventh gear 1237 is a spur gear, with a module of 0.6 mm, 11 teeth, a tip circle of 8.3 mm, and the material is FN0405; the eighth gear 1238 is a spur gear, with a module of 0.6 mm, 23 teeth, a tip circle of 14.6 mm, and the material is FN0405; the ninth gear 1239 is a spur gear, with a module of 0.6 mm, 13 teeth, a tip circle of 9.4 mm, and the material is FN0405; the tenth gear 1230 is a spur gear, with a module of 0.6 mm, 27 teeth, a tip circle of 17.2 mm, and the material is FN0405.

[0039] The embodiment of the present invention further designs the structure of the housing 121 of the gearbox 121. Please refer to Figure 5, the housing 121 of the gearbox 121 includes a first housing part 1211 and a second housing part 1212; the first housing part 1211 is L-shaped and includes a first housing plate 12111 and a second housing plate 12112 vertically arranged on the first housing plate 12111; the second housing part 1212 covers the first housing part 1221 and is detachably and fixedly connected to the first housing plate 12111 and the second housing plate 12112 respectively, specifically by bolts. The first housing part 1211 and the second housing part 1212 enclose the internal space of the housing 121; please refer to Figures 6 - 8 , the motor 11 is fixedly arranged outside the second housing plate 12112, and the output end of the motor 11 passes through the second housing plate 12112 and extends into the housing; a bearing part 1213 parallel to the second housing plate 12112 is arranged in the middle of the inner side of the first housing plate 12111, and the first transmission shaft 1221 is rotatably arranged between the second housing plate 12112 and the bearing part 1213; one end of the rotating shaft 13 passes through the other end of the first housing plate 12111 and extends into the housing 121, and is rotatably arranged on the first housing plate 12111. The other end of the rotating shaft 13 extends in a direction away from the second housing part 1212; the rotating shaft 13 is parallel to the second housing plate 12112; the second transmission shaft 1222, the third transmission shaft 1223, and the fourth transmission shaft 1224 are all parallel to the rotating shaft 13; one ends of the second transmission shaft 1222, the third transmission shaft 1223, and the fourth transmission shaft 1224 are rotatably arranged on the first housing plate 12111 in sequence at intervals, and the other ends of the second transmission shaft 1222, the third transmission shaft 1223, and the fourth transmission shaft 1224 are rotatably arranged on the second housing part 1212 respectively; the third transmission shaft 1223 is arranged beside the bearing part 1213. Through the design of the specific structure of the housing 121 of the gearbox 12 in the embodiment of the present invention, the layout of the components of the five-stage gear transmission mechanism 122 arranged inside the housing 121 of the gearbox 12 is more compact and reasonable, which can effectively reduce the space occupied by the five-stage gear transmission mechanism 122, so that the space occupied by the housing 121 can be smaller.

[0040] In the embodiment of the present invention, the housing 121 of the gearbox 12 is generally cube-shaped, that is, the first housing part 1211 and the second housing part 1212 enclose a hollow cube shape. In the embodiment of the present invention, the end of one end of the rotating shaft 13 also passes through the second housing part 1212 and has a gap with the second housing part 1212.

[0041] In the embodiment of the present invention, please refer to Figure 5A first connecting portion 1213 is provided on the outer side of the first shell plate 12111, and a second connecting portion 1214 is provided on the outer side of the second shell portion 1212. The first connecting portion 1213 and the second connecting portion 1214 are used to install and connect the gear box 12 on the vehicle-mounted ceiling screen mounting base 2.

[0042] In the embodiment of the present utility model, please refer to Figures 3 - 4 and Figures 9 - 10 The flip device 1 of the vehicle-mounted ceiling screen also includes a damping bracket 15, which is sleeved on the rotating shaft 13 and fixed on the outside of the housing 1, specifically fixed on the outside of the end of the first housing plate 12111 away from the second housing plate 12112, and a limiting protrusion 151 is provided on the outer periphery of the damping bracket 15. By designing the limiting protrusion 151 on the outer periphery of the damping bracket 15, when the vehicle-mounted ceiling screen flips to the limiting angle, the limiting structure on the vehicle-mounted ceiling screen can abut against the limiting protrusion 151 on the damping bracket 15 to limit the flipping of the vehicle-mounted ceiling screen.

[0043] In the embodiment of the utility model, it is considered that when the motor 11 stops working, the shaft 13 generally cannot rotate, but the shaft 13 usually has an angle deflection within 5°. Even if the motor 11 stops working, the vehicle-mounted ceiling screen will still have a small shake due to the angle deflection within 5° of the shaft. Therefore, the flip device 1 of the vehicle-mounted ceiling screen in the embodiment of the utility model also includes a damping component 16. Figures 3 - 4 and Figures 9 - 10 The damping assembly 16 includes a first elastic member 161 and a first adjusting member 162 which are sleeved on the rotating shaft 13; the distance between the first adjusting member 162 and the damping bracket 15 is adjustable; the first elastic member 161 is clamped between the damping bracket 15 and the first adjusting member 162. When the motor 11 stops working, in order to overcome the angular deflection amplitude within 5° of the rotating shaft 13 after the motor 11 stops working, the embodiment of the utility model sets a damping assembly 16 on the rotating shaft 13, and provides a damping force through the damping assembly 16 to limit the angular deflection of the rotating shaft 13 after the motor 11 stops working, so that the vehicle-mounted ceiling screen is stable and does not shake, which is particularly suitable for keeping the vehicle-mounted ceiling screen stable and does not shake in a shaking car driving environment. Preferably, a first flat washer 163 sleeved on the rotating shaft 13 is provided between the first elastic member 161 and the damping bracket 15, and a second flat washer 164 sleeved on the rotating shaft 13 is provided between the first elastic member 161 and the first adjusting member 162. The first elastic member 161 is a spring washer group.

[0044] In the embodiment of the utility model, the flip device 1 of the vehicle-mounted ceiling screen further includes a clutch assembly 17. Figures 3 - 4 and Figures 9 - 10, the clutch assembly 17 includes a second elastic member 171 and a second adjusting member 172 sleeved on the rotating shaft 13; a stepped portion 131 is provided on the rotating shaft 13, and the distance between the second adjusting member 172 and the stepped portion 131 is adjustable. The fixing bracket 14 and the second elastic member 171 are clamped between the stepped portion 131 and the second adjusting member 172. The fixing bracket 14 is used to fix the in-vehicle ceiling screen. By providing the clutch assembly 17 on the rotating shaft 13, the flipping device 1 of the in-vehicle ceiling screen can not only electrically flip the in-vehicle ceiling screen but also manually flip the in-vehicle ceiling screen. In the embodiment of the present utility model, a third flat gasket 173 sleeved on the rotating shaft 13 is provided between the fixing bracket 14 and the stepped portion 131, a fourth flat gasket 174 sleeved on the rotating shaft 13 is provided between the second elastic member 171 and the fixing bracket 14, a fifth flat gasket 175 sleeved on the rotating shaft 13 is provided between the second elastic member 171 and the second adjusting member 172, and the second elastic member 171 is a spring gasket group.

[0045] Figures 3 - 4 and Figures 9 - 10 , the damping assembly 16 is located between the clutch assembly 17 and the damping bracket 15, and a stepped portion 131 is provided on the rotating shaft 13 in the position area between the damping assembly 15 and the clutch assembly 17. In the embodiment of the present utility model, please refer to Figure 5 and Figure 6 , the shaft section part of the rotating shaft 13 far from the gearbox 12 is divided into a first rotating shaft section 132 and a second rotating shaft section 133. The first rotating shaft section 132 is located at the end of the rotating shaft 13, the second rotating shaft section 133 is connected to the first rotating shaft section 132, and the outer diameter of the first rotating shaft section 132 is smaller than that of the second rotating shaft section 133, so that a stepped portion 131 is formed at the connection of the first rotating shaft section 132 and the second rotating shaft section 133. The clutch assembly 17 and the fixing bracket 14 are arranged on the second rotating shaft section 132, and the damping assembly 16 is arranged on the second rotating shaft section 133. Both the first adjusting member 162 and the second adjusting member 172 are nuts, and threads are provided at the ends of the first rotating shaft section 132 and the second rotating shaft section 133 far from the gearbox 12. The first adjusting member 162 and the second adjusting member 172 are respectively threadedly connected to the first rotating shaft section 132 and the second rotating shaft section 133, so as to achieve adjustable distance. The fixing bracket 14 is L-shaped and includes a first fixing plate 141 and a second fixing plate 142 vertically arranged on the first fixing plate 141. The first fixing plate 141 is sleeved on the rotating shaft 13, the second fixing plate 142 extends in the direction away from the gearbox 13, and a positioning connection hole is provided on the second fixing plate 142 for fixing the in-vehicle ceiling screen.

[0046] The embodiment of the present utility model also provides an in-vehicle ceiling screen mounting structure. Please refer to Figure 1 and Figure 2, including the flip device 1 of the in-vehicle ceiling screen described above, an in-vehicle ceiling screen (not shown in the figure), and an in-vehicle ceiling screen mounting base 2. A middle part on the front of the in-vehicle ceiling screen mounting base 2 is provided with an in-vehicle ceiling screen mounting groove 22, and the back of the in-vehicle ceiling screen mounting base 2 is provided with a flip device mounting groove 21. A through hole is provided between the in-vehicle ceiling screen mounting groove 22 and the flip device mounting groove 21 to achieve communication. The motor 11 and the gearbox 12 of the flip device 1 of the in-vehicle ceiling screen are installed in the flip device mounting groove 21. The rotating shaft 13 passes through the through hole and extends into the in-vehicle ceiling screen mounting groove 22, and the in-vehicle ceiling screen is fixedly installed through a fixing bracket 14.

[0047] The flip device of the in-vehicle ceiling screen according to the embodiment of the present utility model is used in the in-vehicle ceiling screen mounting structure, which can reduce the space occupied by the motor and the gearbox, and at the same time can provide a large enough transmission torque to drive the in-vehicle ceiling screen to flip.

[0048] The above embodiments only express several implementation manners of the embodiments of the present utility model, and the description thereof is relatively specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the embodiments of the present utility model, several modifications and improvements can be made, and the embodiments of the present utility model are also intended to include these modifications and improvements.

Claims

1. A turning device for a vehicle-mounted ceiling screen, comprising a motor (11), a gear box (12), a rotating shaft (13) and a fixing frame (14); the motor (11) is connected to the rotating shaft (13) by transmission through the gear box (12); the fixing frame (14) is arranged on the rotating shaft (13), and the fixing frame (14) is used to fix the vehicle-mounted ceiling screen; the characteristics are: The gear box (12) comprises a housing and a five-stage gear transmission mechanism (122) arranged in the housing (121); the five-stage gear transmission mechanism comprises a first transmission shaft (1221), a second transmission shaft (1222), a third transmission shaft (1223), a fourth transmission shaft (1224), a first gear (1231), a second gear (1232), a third gear (1233), a fourth gear (1234), a fifth gear (1235), a sixth gear (1236), a seventh gear (1237), an eighth gear (1238), a ninth gear (1239) and a tenth gear (1230); the motor (11) is fixedly arranged at one end of the housing (121); the motor (11) is The output shaft of the motor (11) passes through the end wall of the housing (121) and extends into the housing (121); the rotating shaft (13) is rotatably arranged at the other end of the housing (121), one end of the rotating shaft (13) passes through the side wall of the other end of the housing (121), and the other end of the rotating shaft (13) extends in a direction away from the housing (121); the first transmission shaft (1221) is rotatably arranged on the inner side of the end wall of one end of the housing (121), and the first transmission shaft (1221) is parallel to the output shaft of the motor (11); the second transmission shaft (1222), the third transmission shaft (1223), and the fourth transmission shaft (1224) are respectively and sequentially arranged at intervals on the housing (121). The first gear (1231) is a gear wheel that is arranged in a region between the output shaft end of the motor (11) and the rotating shaft (13), and is rotatably arranged between the two side walls of the housing (121); the second transmission shaft (1222), the third transmission shaft (1223) and the output shaft of the motor (11) are all arranged at intervals on the same side of the first transmission shaft (1221); the first gear (1231) is fixedly sleeved on the output shaft of the motor (11); the second gear (1232) and the third gear (1233) are coaxially fixedly sleeved on the first transmission shaft (1221), and the second gear (1232) is meshed with the first gear (1231); the fourth gear (1234) and the fifth gear (1235) are meshed with each other; 235) is coaxially fixedly sleeved on the second transmission shaft (1222), and the fourth gear (1234) is meshed with the third gear (1233); the sixth gear and the seventh gear (1237) are coaxially fixedly sleeved on the third transmission shaft (1223), and the sixth gear is meshed with the fifth gear (1235); the eighth gear (1238) and the ninth gear (1239) are coaxially fixedly sleeved on the fourth transmission shaft (1224), and the eighth gear (1238) is meshed with the seventh gear (1237); the tenth gear (1230) is fixedly sleeved on the rotating shaft (13), and the tenth gear (1230) is meshed with the ninth gear (1239).

2. The flipping device of the vehicle-mounted ceiling screen according to claim 1 is characterized in that: The reduction ratio of the first gear (1231) and the second gear (1232) is 34 / 11; the reduction ratio of the third gear (1233) and the fourth gear (1234) is 15.5 / 1; the reduction ratio of the fifth gear (1235) and the sixth gear (1236) is 31 / 12; the reduction ratio of the seventh gear (1237) and the eighth gear (1238) is 23 / 11; and the reduction ratio of the ninth gear (1239) and the tenth gear (1230) is 27 / 13.

3. The turning device of the vehicle-mounted ceiling screen according to claim 1 is characterized in that: The first gear (1231) is a helical gear with a module of 0.5 mm, a number of teeth of 11, a tooth top circle of 7 mm, and is made of brass; the second gear (1232) is a helical gear with a module of 0.5 mm, a number of teeth of 34, a tooth top circle of 18.6 mm, and is made of POM; the third gear (1233) is a worm gear with a module of 0.5 mm, a number of teeth of 2, a tooth top circle of 7.7 mm, and is made of stainless steel; the fourth gear (1234) is a helical gear with a module of 0.5 mm, a number of teeth of 31, a tooth top circle of 16.7 mm, and is made of brass; the fifth gear (1235) is a spur gear with a module of 0.5 mm, a number of teeth of 12, a tooth top circle of 7.5 mm, and is made of FN0405; the sixth gear (123 6) is a spur gear with a module of 0.5 mm, a number of teeth of 31, a tooth top circle of 16.4 mm, and a material of FN0405; the seventh gear (1237) is a spur gear with a module of 0.6 mm, a number of teeth of 11, a tooth top circle of 8.3 mm, and a material of FN0405; the eighth gear (1238) is a spur gear with a module of 0.6 mm, a number of teeth of 23, a tooth top circle of 14.6 mm, and a material of FN0405; the ninth gear (1239) is a spur gear with a module of 0.6 mm, a number of teeth of 13, a tooth top circle of 9.4 mm, and a material of FN0405; the tenth gear (1230) is a spur gear with a module of 0.6 mm, a number of teeth of 27, a tooth top circle of 17.2 mm, and a material of FN0405.

4. The turning device of the vehicle-mounted ceiling screen according to claim 1 is characterized in that: The housing (121) of the gear box (12) comprises a first housing portion (1211) and a second housing portion (1212); the first housing portion (1211) is L-shaped, comprising a first housing plate (12111) and a second housing plate (12112) vertically arranged on the first housing plate (12111); the second housing portion (1212) is covered on the first housing portion (1211) and is detachably fixedly connected to the first housing plate (12111) and the second housing plate (12112), respectively; the first housing portion (1211) is The first housing plate (12111) and the second housing portion (1212) are combined to form an internal space of the housing (121); the motor (11) is fixedly arranged on the outer side of the second housing plate (12112), and the output end of the motor (11) passes through the second housing plate (12112) and extends into the housing (121); a bearing portion (1213) parallel to the second housing plate (12112) is provided at the middle part of the inner side of the first housing plate (12111), and the first transmission shaft (1221) is rotatably arranged on the second housing plate (12112). The rotating shaft (13) is disposed between the first housing plate (12112) and the bearing portion (1213); one end of the rotating shaft (13) passes through the other end of the first housing plate (12111) and extends into the housing (121), and is rotatably disposed on the first housing plate (12111), and the other end of the rotating shaft (13) extends in a direction away from the second housing portion (1212); the rotating shaft (13) is parallel to the second housing plate (12112); the second transmission shaft (1222), the third transmission shaft (1223), and the fourth transmission shaft (1224) are connected to the first housing plate (12111). 24) are parallel to the rotating shaft (13); one ends of the second transmission shaft (1222), the third transmission shaft (1223) and the fourth transmission shaft (1224) are rotatably arranged in sequence on the first shell plate (12111), and the other ends of the second transmission shaft (1222), the third transmission shaft (1223) and the fourth transmission shaft (1224) are rotatably arranged on the second shell portion (1212); the third transmission shaft (1223) is arranged on the side of the bearing portion (1213).

5. The turning device of the vehicle-mounted ceiling screen according to claim 4 is characterized in that: A first connecting portion (1214) is provided on the outer side of the first shell plate (12111), and a second connecting portion (1215) is provided on the outer side of the second shell plate (1212). The first connecting portion (1214) and the second connecting portion (1215) are used to install and connect the gear box (12) on a vehicle-mounted ceiling screen mounting base.

6. The turning device of the vehicle-mounted ceiling screen according to claim 1 is characterized in that: It also comprises a damping bracket (15), the damping bracket (15) being sleeved on the rotating shaft (13) with a gap and fixed on the outside of the housing (121), and a limiting protrusion (151) being provided on the outer periphery of the damping bracket (15).

7. The turning device of the vehicle-mounted ceiling screen according to claim 6 is characterized in that: The invention also comprises a damping assembly (16), wherein the damping assembly (16) comprises a first elastic member (161) and a first adjusting member (162) sleeved on the rotating shaft (13); the distance between the first adjusting member (162) and the damping bracket (15) is adjustable; and the first elastic member (161) is clamped between the damping bracket (15) and the first adjusting member (162).

8. The turning device of the vehicle-mounted ceiling screen according to claim 7 is characterized in that: The invention also comprises a clutch assembly (17), wherein the clutch assembly (17) comprises a second elastic member (171) and a second adjusting member (172) sleeved on the rotating shaft (13); a stepped portion is provided on the rotating shaft (13); the distance between the second adjusting member (172) and the stepped portion is adjustable; the fixing frame (14) and the second elastic member (171) are clamped between the stepped portion and the second adjusting member (172).

9. The turning device of the vehicle-mounted ceiling screen according to claim 8 is characterized in that: The damping assembly (16) is located between the clutch assembly (17) and the damping bracket (15), and the rotating shaft (13) is provided with the stepped portion in the position area between the damping assembly (16) and the clutch assembly (17); the fixing frame (14) is L-shaped, comprising a first fixing plate (141) and a second fixing plate (142) vertically arranged on the first fixing plate (141), the first fixing plate (141) is sleeved on the rotating shaft (13), the second fixing plate (142) extends in a direction away from the gear box (12), and the second fixing plate (142) is used to fix the vehicle-mounted ceiling screen.

10. A vehicle-mounted ceiling screen installation structure, characterized in that: A flipping device for a vehicle-mounted ceiling screen comprising any one of claims 1-9.

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