CN220904860U - Screen overturning movement mechanism - Google Patents

Abstract

The utility model discloses a screen overturning movement mechanism which comprises a base, wherein one side of the base is provided with a driving assembly, two ends of the driving assembly are respectively connected with a transmission assembly through bevel gears, two groups of transmission assemblies are distributed at two ends of the driving assembly in parallel and are vertically distributed with the driving assembly, the lower part of the transmission assembly is provided with a sliding rail assembly, the bottom of the transmission assembly is in sliding connection with the sliding rail assembly through a sliding block, the inner side of the transmission assembly is fixedly connected with a connecting rod assembly through the sliding block, the driving assembly starts to drive the transmission assemblies at two ends to synchronously drive, and the transmission assemblies drive the connecting rod assembly to synchronously move along the sliding rail assembly. The utility model has compact structure, high space utilization, reliability, stability and stable operation.

Description

Screen overturning movement mechanism

Technical Field

The utility model relates to an internal part in the field of automobiles, in particular to a screen overturning and moving mechanism.

Background

Along with the development of automobile industry, for promoting user experience, configuration screen in the car makes things convenient for the passenger to watch the video, and roof screen adopts rotatory mode to realize opening and packing up mostly, and rotatory mode needs to additionally provide the damping to maintain the stability of screen, and the structure is complicated, relies on a link mechanism to overturn simultaneously, and operating stability is poor to need manual regulation screen angle, intelligent degree is lower, and peripheral driver adjusts screen angle and occupies the interior space again, and space utilization is low, does not accord with the structural design that modern car retrencied.

Disclosure of utility model

Therefore, aiming at the technical problems, the utility model provides a screen overturning movement mechanism which has the characteristics of compact structure, high space utilization rate, reliability, stability, stable operation, long service life, low noise and the like.

In order to achieve the above object, the following technical solutions are adopted.

The utility model provides a screen overturning movement mechanism which comprises a base, wherein one side of the base is provided with a driving assembly, two ends of the driving assembly are respectively connected with a transmission assembly through bevel gears, two groups of transmission assemblies are distributed at two ends of the driving assembly in parallel and are vertically distributed with the driving assembly, the lower part of the transmission assembly is provided with a sliding rail assembly, the bottom of the transmission assembly is in sliding connection with the sliding rail assembly through a sliding block, the inner side of the transmission assembly is fixedly connected with a connecting rod assembly through the sliding block, the driving assembly starts to drive the transmission assemblies at two ends to synchronously drive, and the transmission assemblies drive the connecting rod assembly to synchronously move along the sliding rail assembly.

According to the technical scheme, the driving assembly is arranged on one side of the base, two ends of the driving assembly are respectively connected with the transmission assembly through the bevel gears, the two groups of transmission assemblies are distributed at two ends of the driving assembly in parallel, the driving assembly is arranged in the base, power is transmitted to the transmission assembly through the bevel gears when the driving assembly drives, the driving and transmission integrated structure is realized, the interior is compact, the space utilization rate is high, and the driving assembly meets the simplified structural design of a modern automobile; the lower part of each group of transmission assembly is provided with a sliding rail assembly, the bottom of the transmission assembly is in sliding connection with the sliding rail assembly through a sliding block, the inner side of the transmission assembly is fixedly connected with a connecting rod assembly through the sliding block, a driving assembly starts to drive the transmission assemblies at the two ends to synchronously drive the connecting rod assemblies to synchronously move along the sliding rail assembly, and under the driving of the driving assembly, the structure is synchronously stressed and driven at the two sides when in overturning movement, so that the mechanism is stable in working and stable in operation, and meanwhile, the driving assembly only transmits power in the process, bears little, has long service life and low noise; the transmission assembly is controlled by the driving assembly through the bevel gear structure, when the driving assembly does not act, the whole mechanism has a self-locking function, and when the vehicle-mounted screen is used, the screen angle is reliable and stable.

Further, the driving assembly comprises a driver, a gear set and a gear shaft, the driving end of the driver is connected with the gear set, the gear set is connected with gears on the gear shaft in a meshed mode, and two ends of the gear shaft are connected with the bevel gear set through couplings respectively.

In the above technical scheme, the drive assembly includes driver, gear train, gear shaft, the drive end of driver is connected with the gear train, gives the gear train with power transmission when the driver drives, be equipped with the gear on the gear shaft, gear train and epaxial gear engagement transmission driver's driving force, pass through the coupling joint between gear shaft and bevel gear train diaxon to through base meter screw lock diaxon, make bevel gear can transmit the driving force of driver.

Further, a rotating shaft seat matched with the gear shaft is arranged in the base, and the rotating shaft seat is positioned at two ends of the gear shaft.

In the technical scheme, the base is provided with two rotating shaft seats, the rotating shaft seats of the base are provided with two through holes, the through holes are matched with the gear shaft, and the gear shaft is connected with the rotating shaft through the rotating shaft seats, so that the gear shaft is rotationally connected to the base.

Further, a driving shell is sleeved on the driving assembly, and gears, a driver and a gear set on the gear shaft are arranged in the fixing sleeve and the base.

In the technical scheme, the driving housing is arranged outside the driving assembly, and the gear on the gear shaft, the driver and the gear set are arranged in the driving housing and the base, so that the internal space is integrated, the structure is compact, dust, other pollution and the like can be prevented from entering the driving assembly to affect the transmission efficiency, the service life of the components is shortened, and the protection effect on the driving assembly is achieved.

Further, the transmission assembly comprises a screw rod, a screw nut and a screw nut support, supporting seats matched with the screw rod are arranged at two ends of the screw rod in the base, the supporting seats are fixed on the base, one end of the screw rod is connected with the bevel gear set, the screw nut is arranged in the screw rod, the screw nut passes through the screw nut support and is connected with the screw nut support, the screw nut support can move along the screw rod along with the screw nut, and the screw nut support is connected with the sliding rail assembly.

In the above-mentioned technical scheme, drive assembly includes lead screw, screw and screw support, be located the lead screw both ends in the base and be equipped with lead screw complex supporting seat, the supporting seat is fixed on the base, the lead screw passes through the supporting seat and rotates to be connected on the base, bevel gear group is connected to lead screw one end and with the bevel gear meshing that the gear shaft is connected, and the bevel gear meshing through bevel gear group transmits the driving force of driver, and then drives the lead screw and rotate, the screw passes the screw support and with screw support fixed connection, screw support and screw can follow the lead screw and take place to remove, slide rail subassembly and lead screw parallel distribution, slide rail subassembly and lead screw pass through screw leg joint, through slide rail subassembly and drive assembly's cooperation connection, when no exogenic action on drive assembly, screw and lead screw have the self-locking ability, make the mechanism have reliable and stable characteristics.

Further, the sliding rail component comprises a guide rail and a sliding block, the guide rail is arranged on the base, the sliding block sliding along the guide rail is arranged on the guide rail, and the sliding block is connected with the nut bracket.

In the above technical scheme, the slide rail assembly includes guide rail, slider, the guide rail sets up on the base, be equipped with on the guide rail along the gliding slider of guide rail, slider and screw leg joint. When the driving assembly drives, the driving assembly transmits driving force to the screw rod on the transmission assembly through the bevel gear group, the screw rod rotates to drive the screw nut to rotate upwards and downwards, and the sliding block slides upwards and downwards on the guide rail along with the up-and-down rotation of the screw nut on the screw nut support.

Further, the positions of the base, which are connected with the two transmission assemblies, are respectively provided with a guide rail groove, the guide rails are arranged in the guide rail grooves and are distributed in parallel with the screw rods, and the two supporting seats are respectively positioned at two ends of the guide rail grooves.

In the above technical scheme, the position that two drive assembly are connected to the base all is equipped with the guide rail groove, the guide rail is arranged in the guide rail groove and is parallel arrangement with the lead screw, carries out spacing and fixing to the guide rail through the guide rail groove, two supporting seats are located the both ends in guide rail groove respectively, the guide rail groove is a straight line with the supporting seat that the guide rail groove is located its upper and lower both ends outward.

Further, the connecting rod assembly comprises a rotating seat, a rotating arm and a screen support, wherein the rotating seat is positioned on the inner side of the guide rail groove and is fixed on the base, one end of the rotating arm is rotationally connected with the rotating seat, the other end of the rotating arm is connected with the screen support, the other end of the screen support is connected with the sliding block, and the surface of the screen support is connected with the vehicle-mounted screen.

In the above technical scheme, link assembly includes rotation seat, rocking arm and screen support, it is in to rotate the seat and be located the guide rail groove inboard is fixed on the base, the one end of rocking arm rotates with the rotation seat and is connected, the rocking arm other end and screen leg joint, the other end and the slider of screen support are connected, screen support surface connection on-vehicle screen, when drive assembly drive lead screw and slider upward downward movement, screen support and screen on the screen support of link assembly connection slider one end follow upward downward movement, at this moment, screen support upward downward movement makes rocking arm and fixing base, rocking arm and screen support's tie point rotate, makes link assembly's angle change to adjust screen pivoted angle.

Compared with the prior art, the screen overturning movement mechanism has the following beneficial effects:

The first, the utility model provides a screen overturning mechanism, the driving assembly is arranged in the base, the driving and transmission integrated screen overturning mechanism has compact internal structure and high space utilization rate, and accords with the simplified structural design of modern automobiles.

The second, the utility model provides a screen overturning movement mechanism, which is provided with two groups of transmission components and two groups of connecting rod components, the screen is driven to overturn under the stress of two sides by the driving components, the operation is stable, the screen mainly depends on the transmission components and the sliding rail components to bear the gravity, the driving components only transmit power in the process, the bearing is small, the service life is long, and the noise is low.

The third, the utility model provides a screen overturning movement mechanism, the transmission assembly is controlled by the driving assembly through the bevel gear structure, when the driving assembly does not act, the whole mechanism has a self-locking function, and when the vehicle-mounted screen is used, the screen angle is reliable and stable.

Drawings

FIG. 1 is a front view of a screen tilt mechanism of the present utility model;

FIG. 2 is an assembly view of a screen tilting mechanism and a screen according to the present utility model;

fig. 3 is an enlarged view of a portion a in fig. 1;

FIG. 4 is a side view of a screen tilt mechanism according to the present utility model;

FIG. 5 is a front three-axis view of a screen tilt mechanism mount according to the present utility model;

FIG. 6 is a front view of a screen tilt mechanism drive assembly of the present utility model;

FIG. 7 is a partial detail view of a screen tilt motion mechanism drive assembly of the present utility model;

FIG. 8 is a front view of a slide rail assembly of a screen tilt mechanism according to the present utility model;

FIG. 9 is a front view of a screen tilt motion mechanism drive assembly of the present utility model;

Fig. 10 is a front view of a screen tilt mechanism link assembly of the present utility model.

Reference numerals in the drawings: 1-a base; 2-a drive assembly; 3-a slide rail assembly; 4-a transmission assembly; a 5-link assembly; 6, a supporting seat; 7-a rotating shaft seat; 8, a shaft coupling; 9-bevel gears; 10-a nut bracket; 11-screen; 21-a gear shaft; 22-a drive housing; 23-gear set; 24-drive; 31-a guide rail; 32-a slider; 41-screw rod; 42-nut; 51-rotating arm; 52-screen support; 53-rotating the seat.

Detailed Description

The screen tilting mechanism according to the present utility model will be described in further detail with reference to the following embodiments and the accompanying drawings.

Referring to fig. 1 to 10, a non-limiting embodiment of the utility model, a screen overturning motion mechanism comprises a base 1, wherein one side of the base 1 is provided with a driving component 2, two ends of the driving component 2 are respectively connected with a transmission component 4 through a bevel gear set 9, the two groups of transmission components 4 are distributed at two ends of the driving component 2 in parallel and are vertically distributed with the driving component 2, a sliding rail component 3 is arranged below the transmission component 4, the bottom of the transmission component 4 is in sliding connection with the sliding rail component 3 through a sliding block 32, the inner side of the transmission component 4 is fixedly connected with a connecting rod component 5 through the sliding block 32, the driving component 2 starts to drive the transmission components 4 at two ends to synchronously drive, and the transmission component 4 drives the connecting rod component 5 to synchronously move along the sliding rail component 3. In the above technical scheme, one side of the base 1 is provided with the driving component 2, two ends of the driving component 2 are respectively connected with the transmission component 4 through the bevel gear set 9, the two groups of transmission components 4 are distributed at two ends of the driving component 2 in parallel, the driving component 2 is arranged in the base 1, and when the driving component 2 drives, power is transmitted to the transmission component 4 through the bevel gear set 9, so that a driving and transmission integrated structure is realized, the interior is compact, the space utilization rate is high, and the structure meets the simplified structural design of modern automobiles; the lower part of each group of transmission components 4 is provided with a sliding rail component 3, the bottom of each transmission component 4 is in sliding connection with the sliding rail component 3 through a sliding block 32, the inner side of each transmission component 4 is fixedly connected with a connecting rod component 5 through the sliding block 32, the driving components 2 start to drive the transmission components 4 at the two ends to synchronously drive the transmission components 4 to move, the transmission components 4 drive the connecting rod components 5 to synchronously move along the sliding rail components 3, and under the driving of the driving components 2, the structure synchronously bears force and drives at the two sides when in overturning movement, so that the mechanism works stably and operates stably, and meanwhile, the driving components 2 only transmit power in the process, so that the bearing is small, the service life is long, and the noise is low; the transmission assembly 4 is controlled by the driving assembly 2 through the structure of the bevel gear set 9, when the driving assembly 2 does not act, the whole mechanism has a self-locking function, and when the vehicle-mounted screen 11 is used, the angle of the screen 11 is reliable and stable. In the embodiment, a driving component 2, a transmission component 4, a sliding rail component 3 and a connecting rod component 5 are arranged in the base 1 together, and a driving piece transmits driving force through the transmission component 4 with two ends connected; the transmission component 4, the sliding rail component 3 and the connecting rod component 5 are respectively provided with two groups, each group is fixedly connected through the sliding block 32 and distributed in parallel, and synchronously moves under the driving of the driving force of the driving component 2, and the device has the characteristics of high space utilization rate, reliability, stability, stable operation, long service life, low noise and the like.

Referring to fig. 1 to 10, in a non-limiting embodiment of the present utility model, the driving assembly 2 includes a driver 24, a gear set 23, and a gear shaft 21, where the gear set 23 is connected to the driving end of the driver 24, the gear set 23 is meshed with gears on the gear shaft 21, and two ends of the gear shaft 21 are connected to the bevel gear set 9 through couplings 8, respectively. In the above technical scheme, the driving assembly 2 comprises a driver 24, a gear set 23 and a gear shaft 21, wherein the driving end of the driver 24 is connected with the gear set 23, power is transmitted to the gear set 23 when the driver 24 drives, a gear is arranged on the gear shaft 21, the gear set 23 is meshed with the gear on the gear shaft 21 to transmit the driving force of the driver 24, and the two shafts of the gear shaft 21 and the bevel gear set 9 are connected through a coupling 8 and are locked through a base meter screw, so that the bevel gear set 9 can transmit the driving force of the driver 24. In this embodiment, the driver 24 is preferably a motor, but may be any driving motor or driving pump; the gear set 23 and the gear shaft 21 are meshed through gear tooth surfaces, or a worm can replace the gear shaft 21, a worm replaces a worm gear of the gear set 23, and the like.

Referring to fig. 1 to 10, in a non-limiting embodiment of the present utility model, a rotating shaft seat 7 is disposed in the base 1 and cooperates with the gear shaft 21, and the rotating shaft seat 7 is disposed at two ends of the gear shaft 21. In the above technical scheme, the base 1 is provided with two rotating shaft seats 7, two through holes are formed in the rotating shaft seats 7 of the base 1, the through holes are matched with the gear shaft 21, and the gear shaft 21 is connected with the rotating shaft through the rotating shaft seats 7, so that the gear shaft 21 is arranged on the base 1. In this embodiment, the rotating shaft seat 7 has supporting and fixing positioning functions on the gear shaft 21, so that the gear shaft 21 is stable and efficient in transmitting driving force.

Referring to fig. 1 to 10, in a non-limiting embodiment of the present utility model, the driving assembly 2 is provided with a driving housing 22, and the gears, the driver 24 and the gear set 23 on the gear shaft 21 are disposed in the driving housing 22 and the base 1. In the above technical scheme, the driving assembly 2 is provided with the driving housing 22, and the gear on the gear shaft 21, the driver 24 and the gear set 23 are arranged in the driving housing 22 and the base 1, so that the internal space is integrated, the structure is compact, dust, other pollution and the like can be prevented from entering the driving assembly 2 to affect the transmission efficiency, the service life of the components is shortened, and the driving assembly 2 is protected.

Referring to fig. 1 to 10, in a non-limiting embodiment of the present utility model, the transmission assembly 4 includes a screw 41, a nut 42 and a nut support 10, support bases 6 matched with the screw 41 are disposed at two ends of the screw 41 in the base 1, the support bases 6 are fixed on the base 1, one end of the screw 41 is connected with the bevel gear set 9, the nut 42 is disposed in the screw 41, the nut 42 passes through the nut support 10 and is connected with the nut support 10, the nut support 10 can move along the screw 41 along with the nut 42, and the nut support 10 is connected with the slide rail assembly 3. In the above technical scheme, the transmission assembly 4 includes a screw 41, a nut 42 and a nut bracket 10, the two ends of the screw 41 located in the base 1 are provided with a supporting seat 6 matched with the screw 41, the supporting seat 6 is fixed on the base 1, the screw 41 is rotatably connected to the base 1 through the supporting seat 6, one end of the screw 41 is connected with a bevel gear set 9 and meshed with a bevel gear connected with the gear shaft 21, the driving force of the driver 24 is transmitted through the bevel gear mesh of the bevel gear set 9, the nut 42 is further driven to rotate, the nut 42 passes through the nut bracket 10 and is fixedly connected with the nut bracket 10, the nut bracket 10 and the nut 42 can move along the screw 41, the sliding rail assembly 3 is parallel to the screw 41, the sliding rail assembly 3 is connected with the screw 41 through the nut bracket 10, and is cooperatively connected with the transmission assembly 4 through the sliding rail assembly 3, and the nut 41 has self-locking capability when no external force acts on the transmission assembly 4, so that the mechanism has the stable and reliable characteristics, and of course, and the transmission mechanism can also have any self-locking capability.

Referring to fig. 1 to 10, in a non-limiting embodiment of the present utility model, the sliding rail assembly 3 includes a guide rail 31 and a slider 32, the guide rail 31 is disposed on the base 1, the slider 32 sliding along the guide rail is disposed on the guide rail 31, and the slider 32 is connected to the nut bracket 10. In the above technical scheme, the sliding rail assembly 3 includes a guide rail 31 and a slider 32, the guide rail 31 is disposed on the base 1, the guide rail 31 is provided with the slider 32 sliding along the guide rail 31, and the slider 32 is connected with the nut bracket 10. When the driving assembly 2 drives, the driving assembly 2 transmits driving force to the screw rod 41 on the transmission assembly 4 through the bevel gear set 9, the screw rod 41 rotates to drive the screw nut 42 to rotate upwards and downwards, and the sliding block 32 slides upwards and downwards on the guide rail 31 along with the up-and-down rotation of the screw nut 42 on the screw nut bracket 10.

Referring to fig. 1 to 10, in a non-limiting embodiment of the present utility model, the base 1 is provided with guide rail grooves at positions where two transmission assemblies 4 are connected, the guide rail 31 is disposed in the guide rail grooves and is parallel to the screw 41, and the two supporting seats 6 are respectively disposed at two ends of the guide rail grooves. In the above technical scheme, the position of the base 1 connected with the two transmission components 4 is provided with guide rail grooves, the guide rail 31 is arranged in the guide rail grooves and is parallel to the screw rod 41, the two supporting seats 6 are respectively positioned at two ends of the guide rail grooves, and the guide rail grooves and the supporting seats 6 positioned at the upper end and the lower end of the guide rail grooves outside the guide rail grooves are in straight line distribution. In this embodiment, the guide rail groove has good guiding and positioning effects on the guide rail 31, so that the parallelism requirement of the mechanism during operation is well ensured, the efficiency during operation is improved, the mechanical loss during transmission is reduced, and the guide rail groove can be replaced by a stop piece or a positioning pin with positioning effects.

Referring to fig. 1 to 10, in a non-limiting embodiment of the present utility model, the link assembly 5 includes a rotating base 53, a rotating arm 51 and a screen bracket, wherein the rotating base 53 is fixed on the base 1 at the inner side of the guide rail groove, one end of the rotating arm 51 is rotatably connected with the rotating base 53, the other end of the rotating arm 51 is connected with the screen bracket, the other end of the screen bracket is connected with the sliding block 32, and the surface of the screen bracket is connected with the vehicle screen 11. In the above technical scheme, the link assembly 5 includes the rolling seat 53, the rocking arm 51 and the screen support, the rolling seat 53 is located the guide rail groove inboard and fixes on the base 1, the one end of rocking arm 51 rotates with the rolling seat 53 to be connected, the other end and the screen support of rocking arm 51 are connected, the other end and the slider 32 of screen support are connected, screen support surface connection on-vehicle screen 11, when drive assembly 2 drive lead screw 41 and slider 32 upward and downward movement, the screen support of link assembly 5 connection slider 32 one end and screen 11 on the screen support follow upward and downward movement, and at this moment, the screen support upward and downward movement makes rocking arm 51 rotate with the tie point of rolling seat 53, rocking arm 51 and screen support, makes link assembly 5's angle change to adjust screen 11 rotatory angle. In this embodiment, the rotating seat 53, the rotating arm 51 and the screen support form a triangle structure after rotating for a certain angle, and meanwhile, the screw rod 41 of the transmission assembly 4 has a certain self-locking function, so that the mechanism has good stability.

Referring to fig. 1 to 10, the working principle of a screen tilting mechanism according to the present utility model is:

According to the screen overturning movement mechanism, the driving component 2, the transmission component 4, the sliding rail component 3 and the connecting rod component 5 are arranged in the base 1 together, and the driving component transmits driving force through the transmission component 4 with two ends connected; the driving assembly 4, the sliding rail assembly 3 and the connecting rod assembly 5 are respectively provided with two groups, each group is fixedly connected through a sliding block 32 and is distributed in parallel, the bottom of the driving assembly 4 is in sliding connection with the sliding rail assembly 3 through the sliding block 32, the inner side of the driving assembly 4 is fixedly connected with the connecting rod assembly 5 through the sliding block 32, the driving assembly 2 starts the driving assemblies 4 at the two ends to drive synchronously to move, and the driving assembly 4 drives the connecting rod assemblies 5 to synchronously move along the sliding rail assembly 3.

In the description of the present utility model, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing examples are merely exemplary embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and that these obvious alternatives fall within the scope of the utility model.

Claims (8)

1. The utility model provides a screen upset motion, includes base, its characterized in that: one side of base is equipped with drive assembly, drive assembly's both ends are respectively through bevel gear connection a drive assembly, and two sets of drive assembly parallel distribution are in drive assembly's both ends, and be perpendicular distribution with drive assembly, drive assembly's below is equipped with slide rail assembly, drive assembly bottom is through slider and slide rail assembly sliding connection, drive assembly inboard is through slider and link assembly fixed connection, and drive assembly starts the drive assembly of drive both ends and is synchronous transmission motion, and drive assembly drives link assembly along slide rail assembly synchronous motion.

2. A screen tilting mechanism according to claim 1 and wherein: the driving assembly comprises a driver, a gear set and a gear shaft, the driving end of the driver is connected with the gear set, the gear set is connected with gears on the gear shaft in a meshed mode, and two ends of the gear shaft are connected with the bevel gear set through couplings respectively.

3. A screen tilting mechanism according to claim 2, wherein: the base is internally provided with a rotating shaft seat matched with the gear shaft, and the rotating shaft seat is positioned at two ends of the gear shaft.

4. A screen tilting motion mechanism according to claim 3 and wherein: the driving assembly is provided with a driving shell, and gears, a driver and a gear set on the gear shaft are arranged in the driving shell and the base.

5. A screen tilting motion mechanism according to any one of claims 1 to 4 and wherein: the transmission assembly comprises a screw rod, a screw nut and a screw nut support, supporting seats matched with the screw rod are arranged at two ends of the screw rod in the base, the supporting seats are fixed on the base, one end of the screw rod is connected with a bevel gear set, the screw nut is arranged in the screw rod, the screw nut passes through the screw nut support and is connected with the screw nut support, the screw nut support can move along the screw rod along with the screw nut, and the screw nut support is connected with the sliding rail assembly.

6. A screen tilting motion mechanism according to claim 5 and wherein: the sliding rail assembly comprises a guide rail and a sliding block, the guide rail is arranged on the base, the sliding block sliding along the guide rail is arranged on the guide rail, and the sliding block is connected with the nut bracket.

7. A screen tilting motion mechanism according to claim 6 and wherein: the base is connected with the two transmission components, guide rail grooves are formed in the base, the guide rails are arranged in the guide rail grooves and are distributed in parallel with the screw rods, and the two supporting seats are respectively located at two ends of the guide rail grooves.

8. A screen tilting motion mechanism according to claim 7 and wherein: the connecting rod assembly comprises a rotating seat, a rotating arm and a screen support, wherein the rotating seat is positioned on the inner side of the guide rail groove and is fixed on the base, one end of the rotating arm is rotationally connected with the rotating seat, the other end of the rotating arm is connected with the screen support, the other end of the screen support is connected with the sliding block, and the surface of the screen support is connected with the vehicle-mounted screen.