A highly stable vehicle-mounted display screen

Abstract

The present invention relates to the field of vehicle-mounted display screens, and in particular to a highly stable vehicle-mounted display screen. The vehicle-mounted display screen comprises a mounting shell, a rotating column and a display screen, wherein a rotating column is rotatably arranged on the mounting shell, a display screen is connected to the rotating column, a first rotating shaft and a second rotating shaft are rotatably arranged in the mounting shell, a driving mechanism is installed on the mounting shell, the driving mechanism is used to drive the first rotating shaft to rotate, a transmission mechanism is installed between the first rotating shaft and the second rotating shaft, and the transmission mechanism is used to transmit between the first rotating shaft and the second rotating shaft. The present invention adopts a conical surface design between the rubber sleeve and the outer wall of the rotating column. When the contact surface of the rubber sleeve becomes smaller due to wear, the second spring will automatically push the rubber sleeve to move so that its inner wall is again close to the outer wall of the rotating column, thereby extending the service life of the rubber sleeve and ensuring that the rubber sleeve can still maintain close contact with the rotating column after long-term use, effectively reducing the screen shaking caused by gear clearance and improving the stability of the display screen.

Description

Technical Field

[0001] The invention relates to the field of vehicle-mounted display screens, and in particular to a highly stable vehicle-mounted display screen. Background Art

[0002] With the continuous advancement of smart cockpit technology, the functionality and user experience of the vehicle display screen, as an important interface for human-computer interaction, have become one of the key factors in measuring the level of intelligence of modern automobiles. In recent years, with the application of innovative display technology of rotating screens, it has not only improved the utilization efficiency of the space inside the car, but also provided drivers and passengers with richer and more personalized entertainment and information query methods. The vehicle display screen usually includes multiple components such as the display screen itself, a rotating mechanism, an electronic control unit (ECU), and various sensors. Among them, the display screen can use LCD (liquid crystal display) or OLED (organic light-emitting diode) technology to display images through backlight or its own luminous characteristics. The rotating mechanism is composed of mechanical parts such as motors, gears, and bearings, and can perform corresponding actions according to the instructions issued by the ECU, such as screen rotation. As the "brain" of the entire system, the ECU is responsible for parsing and executing commands from the vehicle system or users, while monitoring the working status of the display screen to ensure that it runs smoothly according to the predetermined logic.

[0003] However, although these technologies have brought unprecedented experience to users, some problems have also been exposed in actual applications. In particular, during vehicle driving, the gaps between gears and the bumps caused by uneven road surfaces may cause the display screen to shake, affecting the viewing effect and safety of use. In order to solve this problem, the existing solution is to install a damping device on the output shaft of the rotating mechanism to reduce or eliminate the screen shaking caused by the gaps between the gears. Traditional damping devices are mostly implemented by a slight interference fit between the output shaft and the rubber sleeve. Although this design can achieve a shock-absorbing effect to a certain extent, after long-term use, the rubber sleeve will cause the damping force to gradually decrease due to wear, and may eventually fail completely and can no longer provide effective shock-absorbing protection.

[0004] Therefore, it is particularly important to develop a new damping mechanism that can effectively solve the above problems. The ideal solution should be able to maintain good shock absorption performance while having a long service life, and there will be no obvious performance degradation even after long-term use. Summary of the invention

[0005] In view of this, the present invention provides a highly stable vehicle-mounted display screen, which can solve the disadvantage that after long-term use, the rubber sleeve of the damping device in the traditional vehicle-mounted display screen will gradually decrease in damping force due to wear and may eventually fail completely, resulting in a short service life.

[0006] The technical solution is as follows: A highly stable vehicle-mounted display screen includes a mounting shell, a rotating column and a display screen. The mounting shell is rotatably provided with a rotating column, the display screen is connected to the rotating column, a first rotating shaft and a second rotating shaft are rotatably provided in the mounting shell, a driving mechanism is installed on the mounting shell, the driving mechanism is used to drive the first rotating shaft to rotate, a transmission mechanism is installed between the first rotating shaft and the second rotating shaft, the transmission mechanism is used to transmit between the first rotating shaft and the second rotating shaft, a rubber sleeve is slidably provided in the mounting shell, the rotating column contacts and penetrates the rubber sleeve, the position where the outer wall of the rotating column contacts the rubber sleeve is a cone, and the rubber sleeve The inner wall of is also conical, a first ring plate is rotatably arranged on the rotating column, and the first ring plate is connected to the inner side of the mounting shell, a first spring is connected to the first ring plate, an end of the first spring away from the first ring plate is connected to the second ring plate, a second spring is connected between the second ring plate and the rubber sleeve, when the second spring is in a compressed state, the inner wall of the rubber sleeve is close to the outer wall of the rotating column, a limit strip for limiting the second ring plate is slidably arranged in the mounting shell, the outer wall of the rubber sleeve contacts the limit strip, and the rubber sleeve is used to squeeze the limit strip to move to release the limit of the second ring plate, and a third spring is connected between the limit strip and the mounting shell.

[0007] Further description, the driving mechanism includes a servo motor and a gear set. The servo motor is installed on the mounting shell. The gear set is installed between the output shaft of the servo motor and the first rotating shaft. The gear set is used for transmission between the output shaft of the servo motor and the first rotating shaft.

[0008] Further description, the transmission mechanism includes a first spur gear, a second spur gear and a third spur gear. The first spur gear is installed on the first rotating shaft, the second spur gear is installed on the second rotating shaft, the first spur gear is meshed with the second spur gear, the third spur gear is installed on the rotating column, and the second spur gear is meshed with the third spur gear.

[0009] Further description, it also includes a braking mechanism, which includes a collision detection module, a first electric push rod and a gear block. The collision detection module is installed on the mounting shell, and the first electric push rod is installed on the inner side of the mounting shell. The telescopic rod of the first electric push rod is connected to a gear block, and the gear block is used to limit the second spur gear.

[0010] Further description, it also includes a lubrication mechanism, which includes a liquid storage tank, an extrusion member, a first annular frame, a second annular frame, an infusion member, an annular rotating plate and a liquid outlet pipe. A liquid storage tank for storing lubricating oil is installed on the inner side of the mounting shell, and an extrusion member is also installed on the inner side of the mounting shell. The extrusion member is used to squeeze the lubricating oil in the liquid storage tank. A first annular frame and a second annular frame are installed on the inner side of the mounting shell. An infusion member is arranged between the first annular frame and the second annular frame. The infusion member is used to input the lubricating oil in the liquid storage tank into the first annular frame and the second annular frame. An annular rotating plate is rotatably installed on the first annular frame and the second annular frame, and a liquid outlet pipe for the lubricating oil to flow out is arranged on the annular rotating plate.

[0011] Further description, the extrusion member includes a second electric push rod and a pressure plate. The second electric push rod is arranged in the mounting shell, and a pressure plate is slidably arranged on the inner side of the liquid storage tank. The pressure plate is used to squeeze the lubricating oil in the liquid storage tank. The telescopic rod of the second electric push rod is connected to the pressure plate.

[0012] Further description, the infusion piece includes a first connecting tube and a second connecting tube. The first connecting tube is connected between the liquid storage box and the first annular frame, and the second connecting tube is connected between the first annular frame and the second annular frame.

[0013] Further explanation, it also includes a counterweight block, which is arranged on the annular rotating plate and is used to balance the annular rotating plate.

[0014] The beneficial effects of the present invention are as follows: 1. Through the conical surface design of the rubber sleeve and the outer wall of the rotating column, when the contact surface of the rubber sleeve becomes smaller due to wear, the second spring will automatically push the rubber sleeve to move so that its inner wall is again in close contact with the outer wall of the rotating column, thereby extending the service life of the rubber sleeve and ensuring that the rubber sleeve can still maintain close contact with the rotating column after long-term use, effectively reducing the screen shaking caused by gear clearance and improving the stability of the display screen.

[0015] 2. The present invention adopts a combined design of the first spring and the second spring. When the rubber sleeve moves to a certain extent, the limit bar will release the limit on the second ring plate, and the first spring will further increase the pressure on the second spring to ensure that the rubber sleeve always maintains the best compression state, further extending the service life of the rubber sleeve, and by releasing the elastic force in sections, it not only ensures that the rubber sleeve continues to compress the rotating column, but also avoids excessive resistance to the rotation of the rotating column, thereby improving the stability of the system without affecting normal use.

[0016] 3. The present invention uses the collision detection module and the tooth block controlled by the first electric push rod to quickly limit the second spur gear when a vehicle collides, thereby preventing the servo motor from being damaged due to severe shaking of the display screen.

[0017] 4. The present invention uses a pressure plate driven by a second electric push rod to regularly squeeze the lubricating oil in the liquid storage tank to ensure that the lubricating oil drips onto key transmission components, thereby reducing wear caused by poor lubrication and extending the service life of the transmission mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the driving mechanism and the transmission mechanism of the present invention.

[0020] Figure 3It is a schematic diagram of the three-dimensional structure of the cone surface on the rotating column and the rubber sleeve of the present invention.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the rubber sleeve, the first ring plate and the limiting strip of the present invention.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the first spring, the second ring plate and the second spring of the present invention.

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the braking mechanism of the present invention.

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the first electric push rod, the gear block and the second spur gear of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the liquid storage box, the first annular frame and the second annular frame of the present invention.

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the extrusion part of the present invention.

[0027] Fig.10 It is a three-dimensional structural schematic diagram of the lubrication mechanism of the present invention.

[0028] Markings in the accompanying drawings: 1: mounting shell, 2: rotating column, 3: display screen, 4: first rotating shaft, 5: second rotating shaft, 601: servo motor, 602: gear set, 701: first spur gear, 702: second spur gear, 703: third spur gear, 8: rubber sleeve, 9: first ring plate, 10: first spring, 11: second ring plate, 12: second spring, 13: limit bar, 14: third spring, 15: collision detection module, 16: first electric push rod, 17: tooth block, 18: liquid storage tank, 1901: second electric push rod, 1902: pressure plate, 20: first annular frame, 21: second annular frame, 2201: first connecting pipe, 2202: second connecting pipe, 23: annular rotating plate, 24: liquid outlet pipe, 25: counterweight block. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0030] Embodiment: A highly stable vehicle-mounted display screen, see Figure 1-Figure 5As shown, it includes a mounting shell 1, a rotating column 2 and a display screen 3; the mounting shell 1 is composed of two shell structures, the two shell structures are distributed on the left and right, and the two shell structures can be disassembled; a rotating column 2 is rotatably arranged on the upper side of the mounting shell 1, and the left end of the rotating column 2 is connected to the display screen 3; it also includes a first rotating shaft 4, a second rotating shaft 5, a rubber sleeve 8, a first ring plate 9, a first spring 10, a second ring plate 11, a second spring 12, a limit strip 13, a third spring 14, a driving mechanism and a transmission mechanism; the first rotating shaft is rotatably arranged on the inner side of the mounting shell 1 The first rotating shaft 4 and the second rotating shaft 5 are provided, and the first rotating shaft 4 is located below the second rotating shaft 5; a driving mechanism is installed on the mounting shell 1, and the driving mechanism is used to drive the first rotating shaft 4 to rotate; a transmission mechanism is installed between the first rotating shaft 4 and the second rotating shaft 5, and the transmission mechanism is used to transmit between the first rotating shaft 4 and the second rotating shaft 5, so that the first rotating shaft 4 can drive the second rotating shaft 5 to rotate synchronously; a rubber sleeve 8 is slidably arranged on the upper side of the mounting shell 1, and the rotating column 2 contacts and penetrates the rubber sleeve 8, and the rubber sleeve 8 is used to apply resistance to the rotating column 2 when rotating, so as to reduce or eliminate In addition to the shaking of the display screen 3 caused by the gap between the gears, the position where the outer wall of the rotating column 2 contacts the rubber sleeve 8 is conical, and the inner wall of the rubber sleeve 8 is also conical; a first ring plate 9 is rotatably arranged on the outer side of the rotating column 2, and the outer side of the first ring plate 9 is connected to the inner side of the mounting shell 1; the right end of the first spring 10 is connected to the left side of the first ring plate 9; the left end of the first spring 10 is connected to the second ring plate 11; a second spring 12 is connected between the left side of the second ring plate 11 and the right side of the rubber sleeve 8, and when the second spring 12 is in a compressed state, the inner wall of the rubber sleeve 8 is tightly attached to the outer side of the rotating column 2 Wall; a limit strip 13 for limiting the second ring plate 11 is symmetrically slidably arranged on the upper side of the mounting shell 1, and the outer wall of the rubber sleeve 8 is in contact with the limit strip 13. An inclined surface is provided on the left part of the side where the two limit strips 13 are close to each other. When the rubber sleeve 8 moves to the left and contacts the inclined surface, the rubber sleeve 8 will squeeze the two limit strips 13 to move away from each other, so that the limit strip 13 releases the limit on the second ring plate 11; a third spring 14 is connected between the limit strip 13 and the mounting shell 1, and the elastic force of the second spring 12 is greater than the elastic force of the third spring 14.

[0031] See also Figure 2 As shown, the driving mechanism includes a servo motor 601 and a gear set 602; the servo motor 601 is installed on the lower left side of the mounting shell 1, and the servo motor 601 has a self-locking function. When the servo motor 601 is in a stopped working state, its output shaft will be locked and cannot rotate (the prior art will not be explained in detail); the gear set 602 is composed of two full gears, and the two full gears are respectively installed on the output shaft of the servo motor 601 and the first rotating shaft 4. The two full gears are meshed with each other, and the gear set 602 is used for transmission between the output shaft of the servo motor 601 and the first rotating shaft 4.

[0032] See also Figure 2As shown, the transmission mechanism includes a first spur gear 701, a second spur gear 702 and a third spur gear 703; the first spur gear 701 is installed on the first rotating shaft 4, and the first spur gear 701 is coaxial with the full gear on the first rotating shaft 4; the second spur gear 702 is installed on the second rotating shaft 5, and the first spur gear 701 is meshed with the second spur gear 702; the third spur gear 703 is installed on the rotating column 2, and the second spur gear 702 is meshed with the third spur gear 703. The transmission mechanism adopts gear transmission, which is more stable than belt transmission, and gear transmission is more efficient than belt transmission. This is because the energy loss is smaller when the direct contact between the gears transmits power, while the belt transmission may cause more energy loss due to factors such as sliding and elastic deformation. Finally, the gear transmission facilitates the control of the speed of the servo motor 601 driving the rotating column 2 to rotate.

[0033] In the initial state, the limiting strip 13 limits the second ring plate 11 so that the first spring 10 is in a compressed state, and the second spring 12 is in a compressed state so that the second spring 12 can apply pressure to make the rubber sleeve 8 close to the rotating column 2 .

[0034] When in use, the mounting shell 1 is installed at a designated position in the vehicle; when the display screen 3 needs to be used, the servo motor 601 is used to drive the first rotating shaft 4 to rotate through the gear set 602, so that the first rotating shaft 4 drives the second rotating shaft 5 to rotate through the first spur gear 701 and the second spur gear 702, so that the second rotating shaft 5 drives the rotating column 2 to rotate through the second spur gear 702 and the third spur gear 703, and then the display screen 3 is rotated and unfolded until the display screen 3 is unfolded to a suitable angle, after which the operator can use the display screen 3 in the vehicle; when the vehicle shakes, the vehicle will drive the mounting shell 1, the rotating column 2 and the display screen 3 therein to shake together, at this time, the rotating column 2 and the display screen 3 will be rotated due to the third spur gear 703 and the second The gap between the spur gears 702 causes a slight rotation, and by providing a rubber sleeve 8 and making the inner wall of the rubber sleeve 8 close to the outer wall of the rotating column 2, the rubber sleeve 8 can apply resistance to the rotating column 2 when rotating, so as to reduce or eliminate the shaking of the display screen 3 caused by the shaking of the vehicle, thereby improving the stability of the rotating column 2 and the display screen 3; at the same time, as the rubber sleeve 8 applies resistance to the rotating column 2 when rotating, the rotating column 2 will gradually cause wear to the rubber sleeve 8. After the rubber sleeve 8 is used for a long time, the contact area between the rubber sleeve 8 and the rotating column 2 will gradually decrease. At this time, the second spring 12 will use its own elastic force to push the rubber sleeve 8 to move to the left, so that the inner wall of the rubber sleeve 8 is close to the outer wall of the rotating column 2 again (because the outer wall of the rotating column 2 and the inner wall of the rubber sleeve 8 are both The second spring 12 is a conical surface, and when the rubber sleeve 8 moves to the left, the inner wall of the rubber sleeve 8 will be close to the outer wall of the rotating column 2 again), so that the rubber sleeve 8 provides resistance to the rotation of the rotating column 2 again, thereby extending the service life of the rubber sleeve 8; thereafter, as the second spring 12 continues to use its own elastic force to push the rubber sleeve 8 to move to the left, the elastic force of the second spring 12 itself will gradually decrease, so that the thrust applied by the second spring 12 to the rubber sleeve 8 will gradually decrease, and when the rubber sleeve 8 moves to the left until it contacts the inclined surface of the limit strip 13, the rubber sleeve 8 will squeeze the two limit strips 13 to move away from each other, and the third spring 14 is compressed. When the two limit strips 13 are separated from the second ring plate 11, the limit strip 13 will release the limit on the second ring plate 11, and at this time, the third spring 14 is compressed. A spring 10 will use its own elastic force to squeeze the second ring plate 11 and the second spring 12, so as to increase the thrust applied by the second spring 12 to the rubber sleeve 8, thereby further extending the service life of the rubber sleeve 8, so that the rubber sleeve 8 will not show obvious performance degradation after long-term use; when the display screen 3 is not needed, the servo motor 601 is used to drive the first rotating shaft 4 to rotate and reset in the opposite direction through the gear set 602, so that the first rotating shaft 4 drives the second rotating shaft 5 to rotate and reset in the opposite direction through the first spur gear 701 and the second spur gear 702, so that the second rotating shaft 5 drives the rotating column 2 to rotate and reset in the opposite direction through the second spur gear 702 and the third spur gear 703, and then the display screen 3 is reversely rotated and retracted.

[0035] In the above method, by releasing the elastic force of the first spring 10 and the second spring 12 to the rubber sleeve 8 in segments, compared with directly releasing the elastic force of a large spring to the rubber sleeve 8, the advantage is that the segmented release can prevent a large thrust from being applied to the rubber sleeve 8 at one time, thereby avoiding the rubber sleeve 8 from applying a large resistance to the rotation of the rotating column 2.

[0036] See also Figure 6 and Figure 7 As shown, a braking mechanism is also included, which includes a collision detection module 15, a first electric push rod 16 and a gear block 17; a collision detection module 15 is installed on the left side of the bottom of the mounting shell 1, and the collision detection module 15 is used to detect the collision of the vehicle; a first electric push rod 16 is installed on the front side of the mounting shell 1, and the collision detection module 15 is electrically connected to the first electric push rod 16; a gear block 17 is connected to the telescopic rod of the first electric push rod 16, and the gear block 17 is used to limit the second spur gear 702.

[0037] When the collision detection module 15 detects that the vehicle has collided, the collision detection module 15 will control the first electric push rod 16 to drive the tooth block 17 to move to the side close to the second spur gear 702 until the tooth block 17 is engaged with the second spur gear 702, so that the tooth block 17 limits the second spur gear 702, thereby preventing the display screen 3 from shaking violently through the transmission of the second spur gear 702 to drive the two full gears on the gear set 602 to collide violently, thereby avoiding damage to the output shaft of the servo motor 601; after that, when the vehicle returns to normal, the collision detection module 15 will control the first electric push rod 16 to drive the tooth block 17 to move and reset to the side away from the second spur gear 702, so that the tooth block 17 is separated from the second spur gear 702, so that the tooth block 17 releases the limit on the second spur gear 702.

[0038] See also Figure 8-Figure 10As shown, it also includes a lubrication mechanism, which includes a liquid storage tank 18, an extrusion member, a first annular frame 20, a second annular frame 21, an infusion member, an annular rotating plate 23 and a liquid outlet pipe 24; a liquid storage tank 18 for storing lubricating oil is installed on the right side of the bottom of the installation shell 1, and a feeding port is provided in the middle of the right side of the liquid storage tank 18, and the right side of the installation shell 1 blocks the feeding port; the extrusion member includes a second electric push rod 1901 and a pressing plate 1902, and a second electric push rod 1901 is provided on the right side of the bottom of the installation shell 1, and the second electric push rod 1901 is located on the left side of the liquid storage tank 18, and a pressing plate 1902 is slidingly provided on the inner side of the liquid storage tank 18, and the pressing plate 1902 is used to squeeze the lubricating oil in the liquid storage tank 18, and the telescopic rod of the second electric push rod 1901 is connected to the left side of the pressing plate 1902; a first annular frame 20 and a second annular frame 21 are installed on the inner side of the installation shell 1, and the first annular frame 20 is located on the right side of the first straight gear 701, and the second annular frame 21 is located on the right side of the first straight gear 701. On the right side of the third spur gear 703, the interiors of the first annular frame 20 and the second annular frame 21 are both hollow structures; the infusion piece includes a first connecting tube 2201 and a second connecting tube 2202, the first connecting tube 2201 is connected between the liquid storage tank 18 and the first annular frame 20, and the second connecting tube 2202 is connected between the first annular frame 20 and the second annular frame 21, and the infusion piece is used to input the lubricating oil in the liquid storage tank 18 into the first annular frame 20 and the second annular frame 21; the left sides of the first annular frame 20 and the second annular frame 21 are both rotatably installed with an annular rotating plate 23, and the annular rotating plate 23 is provided with an outlet pipe 24 for the lubricating oil to flow out, and the inner diameter of the outlet pipe 24 is smaller than the inner diameter of the first connecting tube 2201, so that the amount of lubricating oil flowing into the first annular frame 20 is greater than the amount flowing out from the outlet pipe 24, so that the excess lubricating oil in the first annular frame 20 can flow into the second annular frame 21 through the second connecting tube 2202.

[0039] Initially, the reservoir 18 is filled with a proper amount of lubricating oil.

[0040] When in use, the second electric push rod 1901 can be used to regularly drive the pressing plate 1902 to move rightward, so that the pressing plate 1902 can regularly squeeze the lubricating oil in the liquid storage tank 18. When the lubricating oil in the liquid storage tank 18 is pressurized, the lubricating oil in the liquid storage tank 18 will flow into the first annular frame 20 through the first connecting pipe 2201, and the lubricating oil in the first annular frame 20 will flow into the second annular frame 21 through the second connecting pipe 2202. After the lubricating oil flows into the first annular frame 20 and the second annular frame 21, the lubricating oil in the first annular frame 20 and the second annular frame 21 will drip onto the first spur gear 70 through the liquid outlet pipe 24. 1 and the third spur gear 703, so as to lubricate the first spur gear 701 and the third spur gear 703, so as to facilitate the transmission among the first spur gear 701, the second spur gear 702 and the third spur gear 703. Later, when the vehicle is maintained, the mounting shell 1 can be disassembled by a professional so that the right side of the mounting shell 1 no longer blocks the feeding port, and then the lubricating oil is replenished into the liquid storage tank 18 through the feeding port. After a proper amount of lubricating oil is injected into the liquid storage tank 18, the professional cleans the residual oil in the mounting shell 1, and then reassembles the mounting shell 1 so that the right side of the mounting shell 1 blocks the feeding port again.

[0041] See also Fig.10 As shown, a counterweight 25 is also included; a counterweight 25 is provided on the annular rotating plate 23 at a position symmetrical to the liquid outlet pipe 24 , and the counterweight 25 is used to counterweight the annular rotating plate 23 .

[0042] By providing the counterweight 25, when the vehicle enters an uphill or downhill section, the counterweight 25 can drive the annular rotating plate 23 to rotate under the action of gravity, so that the liquid outlet pipe 24 is always located directly above the first spur gear 701 or the third spur gear 703 after rotating with the annular rotating plate 23, so that the lubricating oil in the liquid outlet pipe 24 can accurately drip onto the first spur gear 701 or the third spur gear 703, thereby preventing the lubricating oil from dripping due to the deviation of the liquid outlet pipe 24 and avoiding waste of lubricating oil.

[0043] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A highly stable vehicle-mounted display screen, comprising a mounting shell (1), a rotating column (2) and a display screen (3), wherein the mounting shell (1) is rotatably provided with the rotating column (2), and the display screen (3) is connected to the rotating column (2), characterized in that: A first rotating shaft (4) and a second rotating shaft (5) are rotatably arranged in the installation shell (1); a driving mechanism is installed on the installation shell (1); the driving mechanism is used to drive the first rotating shaft (4) to rotate; a transmission mechanism is installed between the first rotating shaft (4) and the second rotating shaft (5); the transmission mechanism is used to transmit power between the first rotating shaft (4) and the second rotating shaft (5); a rubber sleeve (8) is slidably arranged in the installation shell (1); the rotating column (2) contacts and penetrates the rubber sleeve (8); the position where the outer wall of the rotating column (2) contacts the rubber sleeve (8) is a conical surface; the rubber sleeve (8) is provided at a position where the outer wall of the rotating column (2) contacts the rubber sleeve (8); The inner wall of the sleeve (8) is also conical. A first ring plate (9) is rotatably provided on the rotating column (2), and the first ring plate (9) is connected to the inner side of the mounting shell (1). A first spring (10) is connected to the first ring plate (9). An end of the first spring (10) away from the first ring plate (9) is connected to a second ring plate (11). A second spring (12) is connected between the second ring plate (11) and the rubber sleeve (8). When the second spring (12) is in a compressed state, the inner wall of the rubber sleeve (8) is closely attached to the outer wall of the rotating column (2). The sliding device in the mounting shell (1) A limit strip (13) is provided for limiting the second ring plate (11); the outer wall of the rubber sleeve (8) contacts the limit strip (13); the thrust applied by the second spring (12) to the rubber sleeve (8) gradually decreases; when the rubber sleeve (8) moves to the left until it contacts the inclined surface of the limit strip (13), the rubber sleeve (8) is used to squeeze the limit strip (13) to move so as to release the limit on the second ring plate (11); a third spring (14) is connected between the limit strip (13) and the mounting shell (1); the transmission mechanism comprises a first spur gear (701), a second spur gear (702), a third spring (14) and a third gear (703); The first rotating shaft (4) is provided with a first spur gear (701), the second rotating shaft (5) is provided with a second spur gear (702), the first spur gear (701) is meshed with the second spur gear (702), the rotating column (2) is provided with a third spur gear (703), the second spur gear (702) is meshed with the third spur gear (703), so that the second rotating shaft (5) can drive the rotating column (2) to rotate through the second spur gear (702) and the third spur gear (703).

2. A highly stable vehicle-mounted display screen according to claim 1, characterized in that: The driving mechanism comprises a servo motor (601) and a gear set (602); the servo motor (601) is mounted on the mounting housing (1); the gear set (602) is mounted between the output shaft of the servo motor (601) and the first rotating shaft (4); the gear set (602) is used for transmission between the output shaft of the servo motor (601) and the first rotating shaft (4).

3. A highly stable vehicle-mounted display screen according to claim 2, characterized in that: It also includes a braking mechanism, which includes a collision detection module (15), a first electric push rod (16) and a tooth block (17); the collision detection module (15) is installed on the mounting shell (1); the first electric push rod (16) is installed inside the mounting shell (1); the telescopic rod of the first electric push rod (16) is connected to the tooth block (17); the tooth block (17) is used to limit the second spur gear (702).

4. The highly stable vehicle-mounted display screen according to claim 3, characterized in that: The invention also comprises a lubricating mechanism, which comprises a liquid storage tank (18), an extruding member, a first annular frame (20), a second annular frame (21), an infusion member, an annular rotating plate (23) and a liquid outlet pipe (24). The liquid storage tank (18) for storing lubricating oil is installed inside the mounting shell (1). The extruding member is also installed inside the mounting shell (1). The extruding member is used to extrude the lubricating oil in the liquid storage tank (18). The first annular frame (20) and the second annular frame (21) are installed inside the mounting shell (1). An infusion member is arranged between the first annular frame (20) and the second annular frame (21). The infusion member is used to input the lubricating oil in the liquid storage tank (18) into the first annular frame (20) and the second annular frame (21). The annular rotating plate (23) is rotatably installed on the first annular frame (20) and the second annular frame (21). The annular rotating plate (23) is provided with a liquid outlet pipe (24) for the lubricating oil to flow out.

5. The highly stable vehicle-mounted display screen according to claim 4, characterized in that: The extrusion member comprises a second electric push rod (1901) and a pressure plate (1902); the second electric push rod (1901) is arranged in the mounting shell (1); a pressure plate (1902) is slidably arranged inside the liquid storage tank (18); the pressure plate (1902) is used to squeeze the lubricating oil in the liquid storage tank (18); and the telescopic rod of the second electric push rod (1901) is connected to the pressure plate (1902).

6. The highly stable vehicle-mounted display screen according to claim 5, characterized in that: The infusion piece comprises a first connecting tube (2201) and a second connecting tube (2202); the first connecting tube (2201) is connected between the liquid storage box (18) and the first annular frame (20); and the second connecting tube (2202) is connected between the first annular frame (20) and the second annular frame (21).

7. The highly stable vehicle-mounted display screen according to claim 6, characterized in that: It also includes a counterweight block (25). The counterweight block (25) is arranged on the annular rotating plate (23). The counterweight block (25) is used to balance the annular rotating plate (23).

Images