Flip device for vehicle-mounted display

Abstract

The present invention discloses a flip device for a vehicle-mounted display, comprising two frames, an eccentric part, a movable part and an elastic mechanism. The two frames are respectively a mounting frame and a connecting frame, and the two frames are respectively provided with a rotating part and a rotating frame part, and the rotating part and the rotating frame part can rotate relative to each other. The eccentric part and the rotating part are relatively fixed, and the eccentric part is eccentrically arranged relative to the relative rotation axis of the rotating part and the rotating frame part; the movable part and the rotating frame part can move relative to each other; the elastic mechanism connects the movable part, and the elastic mechanism can generate an elastic force applied to the movable part, and under the action of the elastic force, the movable part and the eccentric part are in contact, and the eccentric part is also subjected to the force applied by the movable part. It can instantly offset the gravitational torque generated by the gravity of the display panel and the flat frame, and protect the motor.

Description

Technical Field

[0001] The invention relates to components of a vehicle-mounted display, in particular to a flipping device of the vehicle-mounted display. Background Art

[0002] Existing in-vehicle displays are usually installed on the ceiling of the vehicle. In order to reduce the space occupied in the vehicle, the display, such as a liquid crystal screen (hereinafter referred to as a display panel), is installed on a flip device. This flip device has a mounting frame fixed on the vehicle roof and a flat frame installed on the back of the display panel. Normally, the flat frame of the flip device is flipped up and retracted, so that the display surface of the display panel is close to the ceiling of the vehicle. When in use, the flat frame of the flip device is flipped down, so that the display panel is upright or nearly upright (hereinafter described in an upright state).

[0003] In a typical flipping device, a rotating frame is provided on the left and right sides of one edge of a flat frame. Each of the two rotating frames is pivotally connected to a transverse short shaft fixedly connected to the corresponding end of the mounting frame. A worm gear reduction motor (hereinafter referred to as a reduction motor) is fixed on the flat frame, and its output shaft is connected to the right short shaft (usually called the right fixed shaft) on the right rotating frame through a coupling.

[0004] When starting the reduction motor in the forward direction, since its output shaft is connected to the right fixed shaft through a coupling, and the right fixed shaft cannot rotate relative to the mounting frame, the body of the reduction motor can only push the flat frame and the right rotating frame to flip downward (for example, clockwise) relative to the output shaft of the reduction motor and the right fixed shaft. At the same time, the left rotating frame on the left side of the flat frame also flips downward relative to the short shaft at the left end of the mounting frame (usually called the left fixed shaft) until the display board stands upright. When starting the reduction motor in the reverse direction, since the output shaft of the reduction motor is connected to the right fixed shaft through a coupling and cannot rotate relative to the mounting frame, the body of the reduction motor can only push the flat frame and the right rotating frame to flip upward (for example, counterclockwise) relative to the mounting frame and the right fixed shaft. At the same time, the left rotating frame on the left side of the flat frame also flips upward relative to the short shaft at the left end of the mounting frame until the display board returns to a horizontal state.

[0005] Normally, the display board and the flat rack are against the roof of the vehicle and are in a horizontal state. Their center of gravity is far away from the left and right fixed axes on the mounting frame. The locking torque of the worm gear in the reduction motor is needed to counteract the downward turning torque generated by the gravity of the display board and the flat rack, so that the display board and the flat rack can be roughly kept horizontal. However, when the vehicle encounters bumps during driving, the display board and the flat rack will be subjected to a sharp acceleration impact. Once this impact is superimposed with the gravity torque of the display board and the flat rack, it exceeds the locking torque of the worm gear in the reduction motor, which may cause damage to the worm gear. Summary of the invention

[0006] The present invention aims to provide a flipping device for a vehicle-mounted display, which can promptly offset the gravity moment generated by the gravity of a display panel and a flat frame, thereby protecting a reduction motor.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a flip device for a vehicle-mounted display comprises two frames, the two frames are respectively a mounting frame and a connecting frame, the two frames are respectively provided with a rotating part and a rotating frame part, and the rotating part and the rotating frame part can rotate relative to each other; it also comprises an eccentric part, a movable part and an elastic mechanism; the eccentric part and the rotating part are relatively fixed and the eccentric part is eccentrically arranged relative to the relative rotation axis of the rotating part and the rotating frame part; the movable part and the rotating frame part can move relative to each other; the elastic mechanism connects the movable part and the elastic mechanism can generate an elastic force applied to the movable part, under the action of the elastic force, the movable part and the eccentric part are in contact and the eccentric part is also subjected to the force applied by the movable part.

[0008] In one embodiment: the movable part and the rotating frame part can slide relative to each other, so that the movable part constitutes a sliding part; the elastic force generated by the elastic mechanism is a tensile force, the movable part is subjected to the tensile force and presses against the eccentric part to apply a force to the eccentric part; the movable part has a contact portion that presses against the eccentric part.

[0009] In one embodiment: the movable part is provided with a through part, the through part has an inner wall, the inner wall has the above-mentioned contact part, the eccentric part is at least partially located in the through part, the contact part and the eccentric part are in contact, and the contact part is pressed against the eccentric part under the tension generated by the elastic mechanism.

[0010] In one embodiment: the movable part includes an action plate, the action plate has the above-mentioned contact portion, the contact portion is in contact with the eccentric portion, and the contact portion is pressed against the eccentric portion under the tension generated by the elastic mechanism.

[0011] In one embodiment: the movable part includes a fixedly connected slider and the above-mentioned action plate, the slider and the rotating frame part can slide relative to each other, and the action plate and the slider are arranged to intersect.

[0012] In one embodiment: the movable part and the rotating frame part can slide relative to each other, and the movable part constitutes the sliding part; the elastic force generated by the elastic mechanism is a thrust, the movable part is subjected to the thrust and abuts against the eccentric part to apply a force to the eccentric part; the movable part has a contact portion that abuts against the eccentric part.

[0013] In one embodiment: the eccentric part includes an eccentric portion and a rolling sleeve rotatably mounted outside the eccentric portion, the movable part is in contact with the rolling sleeve, and the force exerted by the movable part acts on the outer peripheral wall of the rolling sleeve.

[0014] In one embodiment, the sliding direction of the movable part and the rotation axis of the rotating part intersect vertically.

[0015] In one embodiment: the frame with the rotating part is the first frame, and the frame with the rotating frame part is the second frame; the elastic mechanism has a first end and a second end connected to the movable part, and the first end of the elastic mechanism is connected to the second frame.

[0016] In one embodiment: the frame provided with the rotating part is the first frame, and the frame provided with the rotating frame part is the second frame; the first frame is a mounting frame, and the second frame is a connecting frame.

[0017] In one embodiment: the frame provided with the rotating part is the first frame, and the frame provided with the rotating frame part is the second frame; the first frame is a connecting frame, and the second frame is a mounting frame.

[0018] In one embodiment, the elastic mechanism has a first end and a second end connected to the movable part, and the first end of the elastic mechanism is connected to the rotating frame part.

[0019] In one embodiment: the movable part is provided with a connecting seat, and the rotating frame part is provided with a spring seat; the elastic mechanism includes a spring, one end of the spring is connected to the spring seat, and the other end is connected to the connecting seat.

[0020] In one embodiment: the rotating frame part includes a rotating frame and a fixed seat fixed to the rotating frame, and the fixed seat is provided with the above-mentioned spring seat; the movable part includes a slider, and the rotating frame part is provided with a slide groove, and the slider is adapted to be connected to the slide groove; the rotating frame has two sides arranged front and back, the guide groove is located on one side, and a connecting structure is provided on the other side, and the fixing seat is adapted to be fixed to the connecting structure.

[0021] In one embodiment, the guide groove is located on the front side of the rotating frame, the back side of the rotating frame is provided with the above-mentioned connecting structure, and the back side of the rotating frame is flush with the back side of the fixing seat.

[0022] In one embodiment: the fixing seat is provided with a receiving cavity, and the spring is located in the receiving cavity.

[0023] In one embodiment: the movable part has a guide rod, and the guide rod is slidably connected in a guide groove provided in the rotating frame part; the movable part has a first end part and a second end part, the first end part is provided with the above-mentioned contact part, and the second end part is provided with a connecting seat; the elastic mechanism has a first end and a second end connected to the movable part, and the second end of the elastic mechanism is connected to the connecting seat.

[0024] In one embodiment, the frame with the rotating part is the first frame, and the frame with the rotating frame is the second frame; the rotating part at least partially extends out of the side wall of the first frame, and the rotating frame is located on the side of the second frame.

[0025] In one embodiment: the rotating part includes a fixed shaft fixedly connected to the first frame body and an eccentric disk fixedly connected to the fixed shaft, the eccentric part includes an eccentric portion, the eccentric portion is fixedly mounted on the eccentric disk, and the axis of the fixed shaft coincides with the axis of rotation of the rotating part; the rotating frame part includes a rotating frame and a guide groove fixedly connected together, the movable part has a slider, the slider is provided with a guide rod, the guide rod is slidably connected in the guide groove, and the lower end of the slider is provided with a connecting seat; the rotating frame part is provided with a spring seat; the upper end of the elastic mechanism is connected to the connecting seat at the lower end of the slider, and the lower end is connected to the spring seat; the guide groove and the spring seat are sequentially arranged below the eccentric disk.

[0026] In one embodiment: the rotating part includes a fixed shaft fixedly connected to the first frame body and an eccentric disk fixedly connected to the fixed shaft, the eccentric part includes an eccentric portion, the eccentric portion is fixedly mounted on the eccentric disk, and the axis of the fixed shaft coincides with the axis of rotation of the rotating part; the rotating frame part includes a rotating frame and a guide groove fixedly connected together, the movable part has a slider, a guide rod is provided in the middle of the slider, the guide rod is slidably connected in the guide groove, and a connecting seat is provided at the lower end of the slider; the rotating frame part is provided with a spring seat; the lower end of the elastic mechanism is connected to the connecting seat at the lower end of the slider, and the upper end is connected to the spring seat; the guide groove and the spring seat are sequentially arranged below the eccentric disk.

[0027] In one embodiment, it also includes a driving mechanism, which is installed on the connecting frame and is transmission-connected to the mounting frame.

[0028] In one embodiment: it also includes a driving mechanism, which is installed on the mounting frame and is transmission-connected to the connecting frame.

[0029] In one embodiment, it also includes a gravity balancing mechanism, which includes the above-mentioned rotating part, rotating frame part, eccentric part, movable part and elastic mechanism; the gravity balancing mechanism and driving mechanism are respectively arranged on both sides of the connecting frame.

[0030] In one embodiment: the rotating part includes a fixed shaft fixedly connected to the first frame body and an eccentric disk fixedly connected to the fixed shaft, the eccentric part includes an eccentric portion, the eccentric portion is fixedly arranged on the eccentric disk, and the axis of the fixed shaft coincides with the axis of rotation of the rotating part; the rotating frame part includes a rotating frame and a guide groove fixedly connected together, the movable part has a slider, a guide rod is provided in the middle of the slider, the guide rod is slidably connected in the guide groove, and a connecting seat is provided at the lower end of the slider; a spring seat is provided on the fixed frame connected to the rotating frame part; the lower end of the elastic mechanism is connected to the connecting seat at the lower end of the slider, and the upper end is connected to the spring seat; the guide groove and the spring seat are sequentially arranged below the eccentric disk.

[0031] Compared with the background technology, this technical solution has the following advantages:

[0032] The flip device also includes an eccentric part, a movable part and an elastic mechanism, the elastic mechanism generates an elastic force applied to the movable part, the movable part and the eccentric part are in contact under the elastic force, and the eccentric part is also subjected to the force applied by the movable part, the eccentric part directly receives a reverse torque opposite to the gravity torque generated by the gravity of the display and the connecting frame, or the eccentric part applies a reaction force to the movable part, the reaction force generates a reverse torque opposite to the gravity torque generated by the gravity of the display and the connecting frame, the reverse torque can offset the negative effect of the gravity torque on the driving mechanism, and achieve the purpose of the invention of protecting the driving motor. It can improve the anti-bumping and anti-impact capabilities of the entire display flip device. Because it significantly reduces the load of the driving mechanism, the designer can choose a driving source with smaller power and size, such as a smaller reduction motor.

[0033] The rolling sleeve is used to change the nature of the relative movement between the eccentric pin and the pressure plate from sliding friction to rolling friction, which can effectively improve the reliability and service life of the system.

[0034] The elastic force generated by the elastic mechanism is a tensile force, and the movable part is subjected to the tensile force and is pressed against the eccentric part to transfer the tensile force generated by the elastic mechanism to the eccentric part through the movable part, that is, the movable part applies a force to the eccentric part, and the structure is compact and simple.

[0035] The eccentric portion is at least partially located in the penetrating portion, and the contact portion is in contact with the eccentric portion, which further simplifies the structure and makes the structure more compact.

[0036] The first end of the elastic mechanism is connected to the second frame, which is convenient for connection, structural design and layout.

[0037] The first end of the elastic mechanism is connected to the rotating frame part, and the structure is more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] Figure 1 It is a schematic diagram of the three-dimensional structure of the flip device of the vehicle-mounted display according to the first embodiment.

[0040] Figure 2 The figure is a schematic diagram of the structure of the driving mechanism of the flipping device of the vehicle-mounted display according to the first embodiment.

[0041] Figure 3 It is a schematic diagram of the three-dimensional exploded structure of the driving component of Example 1.

[0042] Figure 4 It is a schematic diagram of the three-dimensional structure of the gravity balance mechanism of the flipping device of the vehicle-mounted display in the first embodiment.

[0043] Figure 5 It is a schematic diagram of the three-dimensional exploded structure of the gravity balance mechanism of Example 1.

[0044] Figure 6 It is a structural schematic diagram of the gravity balance mechanism of Example 1 when the display panel is retracted.

[0045] Figure 6-1 for Figure 6 A partial enlarged view of part A in the middle.

[0046] Figure 7 It is a schematic diagram of the three-dimensional structure of the flip device of the vehicle-mounted display according to the second embodiment.

[0047] Figure 8 It is a schematic diagram of the three-dimensional structure of the gravity balance mechanism of the flipping device of the vehicle-mounted display according to the second embodiment.

[0048] Fig. 9 It is a schematic diagram of the three-dimensional exploded structure of the gravity balance mechanism of the second embodiment.

[0049] Fig.10 It is a schematic diagram of the three-dimensional structure of the flip device of the vehicle-mounted display in the third embodiment.

[0050] Fig.11 It is a schematic diagram of the three-dimensional decomposition structure of the gravity balance mechanism of Example 3.

[0051] Fig.12 It is a schematic diagram of the three-dimensional structure of the gravity balance mechanism of Example 3.

[0052] Fig.13 It is a schematic diagram of the three-dimensional decomposition structure of the gravity balance mechanism of Example 4.

[0053] Fig.14 It is a schematic diagram of the three-dimensional exploded structure of the gravity balance mechanism of Example 5.

[0054] Fig.15It is a schematic diagram of the three-dimensional structure of the gravity balance mechanism of Example 6.

[0055] Fig.16 It is a schematic diagram of the three-dimensional decomposition structure of the gravity balance mechanism of Example 6.

[0056] Fig.17 It is a schematic diagram of the three-dimensional structure of the gravity balance mechanism of Example 7.

[0057] Fig.18 It is a schematic diagram of the three-dimensional structure of the gravity balance mechanism of Example 8.

[0058] Fig.19 It is a schematic diagram of the three-dimensional decomposition structure of the gravity balance mechanism of Example 8.

[0059] Fig. 20 It is a schematic diagram of the three-dimensional structure of the gravity balance mechanism of Example 9.

[0060] Fig.21 It is a schematic diagram of the three-dimensional exploded structure of the gravity balance mechanism of Example 9.

[0061] Fig. 22 It is a schematic diagram of the three-dimensional structure of the gravity balance mechanism of the tenth embodiment.

[0062] Fig.23 It is a schematic diagram of the three-dimensional exploded structure of the gravity balance mechanism of the tenth embodiment. DETAILED DESCRIPTION

[0063] Embodiment 1

[0064] For the flip device of the vehicle-mounted display of the first embodiment, please refer to Figure 1 The flip device includes a connecting frame and a mounting frame 2, wherein the connecting frame is a flat frame 1. The flat frame 1 and the display panel ( Figure 1 The back side of the device (not shown) is connected, and the connection is fixed.

[0065] The mounting frame 2 is fixed on the roof of the vehicle, and has right and left lugs 21 and 22 extending downwards at its left and right ends, respectively. A left rotating frame part, a driving mechanism and a right rotating frame part are fixedly installed in sequence on one side of the flat frame 1 close to the mounting frame 2. The left rotating frame part includes a left rotating frame 61, and the right rotating frame part includes a right rotating frame 51.

[0066] The driving mechanism is mounted on the connecting frame and is connected to the mounting frame 2 in a transmission manner. For example, the driving mechanism includes a reduction motor 3, and the output shaft 31 of the reduction motor 3 is coaxially connected to the right fixed shaft 52 sleeved on the right rotating frame 51 through a clutch 4. The clutch 4 connects the motor and the right fixed shaft 52 to play the role of "controlling the motor output torque, and idling to protect the motor from damage when the load is too large". The right end of the right fixed shaft 52 is non-rotatably connected to the right lug 21 of the mounting frame 2 through a right flange 53. The left fixed shaft 62 is sleeved on the left rotating frame 61, and the left end of the left fixed shaft 62 is non-rotatably connected to the left lug 22 of the mounting frame 2 through a left flange 63. The left fixed shaft 62 is coaxial with the right fixed shaft 52, and they constitute the rotating shaft for the flat frame 1 to flip relative to the mounting frame 2. The right rotating frame 51 is installed with an angle switch 8, which provides an angle signal of relative rotation between the right rotating frame 51 and the right fixed shaft 52.

[0067] Please see Figure 2 and Figure 3 The reduction motor 3, the clutch 4, the right rotating frame 51 and the right fixed shaft 52 constitute the driving assembly in this embodiment. The specific structure of the clutch 4 includes, for example, a central shaft 41, a plurality of C-shaped friction plates 42 and an outer sleeve 43. The central shaft 41 is arranged on the right end surface of the output shaft 31 of the reduction motor 3, and each C-shaped friction plate 42 is sleeved on the central shaft 41. Since the inner hole 421 of the C-shaped friction plate 42 is an elliptical hole, the outer peripheral surface of the central shaft 41 contacts the inner hole 421 surface of any C-shaped friction plate 42, and the opening 422 of the C-shaped friction plate 42 allows the C-shaped friction plate 42 to be slightly opened when the central shaft 41 is inserted into the inner hole 421, thereby applying a certain clamping force to the central shaft 41, and the outer sleeve 43 covers the periphery of each C-shaped friction plate 42, and the convex point 423 on the outer periphery of each C-shaped friction plate 42 is stuck in the card groove 421 on the left side of the outer sleeve 43. The right end of the outer sleeve 43 is connected to the left end of the right fixed shaft 52. In this embodiment, only one specific structure of the clutch is listed. Clutches of other structures may be used to connect the motor and the fixed shaft as needed. In this clutch, the output torque of the reduction motor is controlled by the clamping force applied by each C-shaped friction plate to the central shaft. Once the load is too large, each C-shaped friction plate will slip relative to the central shaft, thereby protecting the reduction motor from damage. Compared with the traditional clutch using multiple dynamic and static friction plates, this clutch with only multiple C-shaped friction plates has a simpler and more compact structure, is easy to assemble, and has a low manufacturing cost.

[0068] The angle switch 8 has several parts, namely, a base plate 81, a first micro switch 82, a second micro switch 83, and an angle limit block 84. The first micro switch 82 and the second micro switch 83 are installed side by side on the left side of the lower surface of the base plate 81. The angle limit block 84 is sleeved on the right fixed shaft 52. The inner hole 841 of the angle limit block 84 is statically matched with the right fixed shaft 52. The middle and right sides of the outer periphery of the angle limit block 84 correspond to the contacts of the first micro switch 82 and the second micro switch 83, respectively, and C-shaped first limit grooves 842 and second limit grooves 843 are opened; the left end of the angle limit block 84 is opened with a relative platform 844 along the outer periphery.

[0069] The third bearing 512 and the fourth bearing 513 are installed in the shaft hole 511 of the right rotating frame 51, and the right fixed shaft 52 is inserted into the inner holes of the two bearings 512 and 513. The right end of the right fixed shaft 52 is provided with a relative platform 521 along the outer circumference, and the center hole 531 of the right flange 53 is an oblong hole. The right end of the right fixed shaft 52 is tightly plugged into the center hole 531 of the right flange 53. With the help of the platform 521 at the left end of the angle limit block 84 of the angle switch 8, the position relationship between the two limit grooves on the angle limit block 84 and the two micro switches 82 and 83 contacts is adjusted to make them match each other, and then the right side of the bottom plate 81 of the angle switch 8 is fixed to the right rotating frame 51. The right flange 53 is fixed to the left side of the right lug 21 of the mounting frame 2 by several screws.

[0070] Please see Figure 4 and Figure 5 The left flange 63, spring seat 77, left rotating frame part, rotating part, eccentric part, sliding part and elastic mechanism constitute the gravity balance mechanism in this embodiment. The left rotating frame part includes the left rotating frame 61, guide block 75 and cover plate 78; the rotating part includes the left fixed shaft 62 and the eccentric disk 71; the eccentric part includes the eccentric part and the rolling sleeve 73, and the eccentric part includes the eccentric pin 72; the sliding part includes the slider 74; the elastic mechanism includes a spring, and the spring is a tension spring 76. In this embodiment, the additional parts are arranged on the same surface of the flat frame together with the rotating frame part, which is conducive to controlling the thickness of the entire display flip device (when multiple tension springs need to be used in parallel, this effect is particularly significant) to meet the current market demand for thinness.

[0071] The first bearing 613 and the second bearing 614 are installed in the shaft hole 611 of the left rotating frame 61 near the mounting frame 2, and the left fixed shaft 62 is inserted into the inner holes of the two bearings 613 and 614. The left end of the left fixed shaft 62 is provided with a relative platform 621 along the outer circumference, and the center hole 631 of the left flange 63 is an oblong hole, and the left end of the left fixed shaft 62 is adapted and tightly inserted in the center hole 631 of the left flange 63. The eccentric disk 71 is fixedly installed on the right end of the left fixed shaft 62, and the side (upper side) of the right end surface of the eccentric disk 71 near the mounting frame 2 is fixedly installed with an eccentric pin 72 extending to the right, that is, the eccentric pin 72 is eccentrically arranged relative to the axis of the left fixed shaft 62, and eccentrically arranged relative to the relative rotation axis of the left fixed shaft and the left rotating frame part, and the axis of the left fixed shaft coincides with the relative rotation axis. The diameter of the eccentric disk 71 is greater than the diameter of the left fixed shaft 62 so as to increase the distance between the eccentric pin 72 and the axis of the left fixed shaft 62 .

[0072] The guide block 75 is installed on the right side of the left rotating frame 61 away from the mounting frame 2. A longitudinal guide groove 751 is opened on the right side of the guide block 75. The middle part of the slider 74 is a long guide rod 741. The upper end of the guide rod 741 is fixed with an action plate extending to the left. The action plate is a pressure plate 742. The pressure plate 742 is provided with a contact portion. The lower end of the guide rod 741 is provided with a connecting seat, which is a claw 743. The pressing plate 742 at the upper end of the slider 74 is perpendicular to the guide rod 741. The guide rod 741 of the slider 74 is slidably embedded in the guide groove 751 of the guide block 75. The cover plate 78 covers the right end surface of the guide block 75, limiting the slider 74 to slide up and down relative to the guide block 75. The upper ends of the three tension springs 76 arranged side by side are respectively connected to the claws 743 at the lower end of the slider 74, and their lower ends are respectively connected to the spring seats 77 fixed on the flat frame 1. Three tension springs 76 pull the slider 74 downward, and the contact part of the pressure plate 74 of the slider 74 under the tension force is pressed against the outer peripheral surface of the roller sleeve 73 on the eccentric pin 72 to apply tension to the eccentric part. Among them, the guide block, the connecting seat, the spring and the spring seat are arranged in sequence under the eccentric pin 72.

[0073] The eccentric pin is fixedly mounted on the side of the eccentric disk close to the mounting frame, the pressure plate at the upper end of the slider is perpendicular to the guide rod, and the pressure plate is bent to the left. This structural form has good intuitiveness and is easy to assemble and maintain.

[0074] Start the reduction motor 3 in the forward direction. Since its output shaft 31 is connected to the right fixed shaft 52 through the clutch 4, and the right fixed shaft 52 cannot rotate relative to the mounting frame 2, the body of the reduction motor 3 can only push the flat frame 1 and the right rotating frame 51 to flip downward (for example, clockwise) relative to the reduction motor output shaft 31 and the right fixed shaft 52. At the same time, the left rotating frame 62 on the left side of the flat frame 1 also flips downward relative to the left fixed shaft 52 at the left end of the mounting frame 2, until the contact of the first microswitch 82 in the angle switch 8 hits the rear wall of the first limit groove 842 of the angle limit block 84, and the first microswitch 82 sends a power-off signal to stop the reduction motor 3 from rotating, and the display board 9 stops in the upright position.

[0075] When the reduction motor 3 is started in reverse, the reduction motor output shaft 31 is connected to the right fixed shaft 52 through the clutch 4 and does not rotate relative to the mounting frame 2. The body of the reduction motor 3 can only push the flat frame 1 and the right rotating frame 51 to flip upward (for example, counterclockwise) relative to the mounting frame 2 and the right fixed shaft 52. At the same time, the left rotating frame 61 on the left side of the flat frame 1 also flips upward relative to the left fixed shaft 62 at the left end of the mounting frame 2 until the contact of the second microswitch 83 in the angle switch 8 hits the front wall of the second limit groove 843 of the angle limit block 84. The second microswitch 83 sends a power-off signal to stop the reduction motor 3 from rotating and the display panel 9 returns to a horizontal state.

[0076] When the reduction motor 3 is running, when the display panel 9 encounters resistance from external force and exceeds the limit value specified by the clutch 4, the flat rack 1 cannot flip normally, the center axis 41 of the clutch 4 slips relative to the inner holes 421 of each C-shaped friction plate 42, and the reduction motor 3 will not be damaged due to interference from external force.

[0077] Normally, the display panel 9 and the flat panel frame 1 are flipped to the right and close to the roof of the vehicle, and are roughly kept horizontal. Figure 6 The guide rod 741 of the slider 74 and the three tension springs 76 extend roughly horizontally to the right. Under the tension of the tension springs, the right side of the inner surface of the pressure plate 742 of the slider 74 ( Figure 6 The upper side is shown as the upper side, which is pressed against the outer peripheral surface of the roller sleeve 73 on the eccentric pin 72, that is, the contact part is pressed against the outer peripheral surface of the roller sleeve, so that the eccentric part receives the force applied by the contact part. The gravity G of the display panel 9 and the flat frame 1 generates a gravity moment that flips clockwise downward relative to the axis of the left fixed shaft 62. At this time, please refer to Figure 6-1The three tension springs 76 are pressed against the roller sleeve outside the eccentric pin 72 through the contact part of the pressure plate 742 of the slider 74 to apply a rightward pulling force F1 to the eccentric pin 72. Since the eccentric pin 72, the eccentric disk 71 and the left fixed shaft 62 are all fixed, they will neither move nor rotate relative to the axis of the left fixed shaft 62; on the contrary, the reaction force F2 exerted by the outer peripheral surface of the roller sleeve 73 on the eccentric pin 72 on the pressure plate 742 of the slider 74 causes the slider 74 to generate a counterclockwise rotation reverse torque relative to the axis of the left fixed shaft 62. The reverse torque is transmitted to the flat frame 1 through the guide block 75, which greatly offsets the above-mentioned gravity torque, greatly reduces the overturning torque effect exerted by the gravity G of the display panel 9 and the flat frame 1 on the output shaft 31 of the reduction motor, and improves the locking ability of the display panel 9 and the flat frame 1 when they are in a horizontal state.

[0078] When the display panel 9 and the flat panel frame 1 are in a state of tilting to the lower right, or when the display panel 9 and the flat panel frame 1 are in a state of standing upright downward, or once the display panel 9 and the flat panel frame 1 are flipped to the left and close to the roof of the vehicle and remain roughly horizontal, the three tension springs 76 apply a pulling force to the eccentric pin 72 through the pressure plate 742 of the slider 74. Since the eccentric pin 72, the eccentric disk 71 and the left fixed shaft 62 are all fixed, they will neither move nor rotate relative to the axis of the left fixed shaft 62; on the contrary, the reaction force exerted by the outer peripheral surface of the roller sleeve 73 on the eccentric pin 72 on the pressure plate 742 of the slider 74 causes the slider 74 to generate a counterclockwise rotation reverse torque relative to the axis of the left fixed shaft 62, and the reverse torque is transmitted to the flat panel frame 1 through the guide block 75, which greatly offsets the above-mentioned gravity torque, greatly reduces the overturning torque effect exerted by the gravity G of the display panel 9 and the flat panel frame 1 on the output shaft 31 of the reduction motor, and makes the movement of the output shaft 31 of the reduction motor easier.

[0079] like Figure 6 , Figure 6-1 Obviously, in the case of a mirror image relationship, the gravity balance mechanism can immediately offset the gravity moment generated by the gravity of the display panel 9 and the flat rack 1. Similarly, when the display panel 9 is in a state of tilting to the lower left, refer to its mirror image. Figure 5 In the case of the above, it can be inferred that the gravity balancing mechanism can also promptly offset the gravity moment generated by the gravity of the display panel 9 and the flat rack 1. The specific situation will not be repeated.

[0080] When the vehicle bumps up and down or forward and backward during driving, no matter what state the display panel 9 and the flat frame 1 are in, the gravity balance mechanism can immediately offset the impact torque generated by the impact force on the display panel 9 and the flat frame 1, thereby avoiding damage to the reduction motor 3 caused by these impact forces.

[0081] When encountering special circumstances, it is necessary to urgently fold up the erected flat panel stand 1 and the display panel 9. Regardless of whether the display has power, the personnel on the vehicle can forcefully push the flat panel stand 1 and the display panel 9 forward or backward to make them flip accordingly until they are folded close to the roof of the vehicle. This provides a smooth passage for the evacuation of the personnel on the vehicle. Since the gravity balance mechanism can instantly offset the thrust torque generated by the thrust force on the display panel 9 and the flat panel stand 1, the reduction motor 3 can also be protected.

[0082] Embodiment 2

[0083] The flip device structure of the vehicle-mounted display of the second embodiment is shown in FIG. Figure 7 The flip device has a connecting frame and a mounting frame 2, wherein the connecting frame includes a flat frame 1. The flat frame 1 and the display panel ( Figure 7 The mounting frame 2 is fixed on the roof of the vehicle, and has right and left lugs 21 and 22 extending downwards at its left and right ends, respectively. A left rotating frame part, a driving mechanism and a right rotating frame part are fixedly mounted on one side of the flat frame 1 near the mounting frame 2 in sequence, wherein the left rotating frame part includes a left rotating frame 61, and the right rotating frame part includes a right rotating frame 51.

[0084] The driving mechanism includes a reduction motor 3, and the output shaft 31 of the reduction motor 3 is coaxially connected to the right fixed shaft 52 sleeved on the right rotating frame 51 through a clutch 4. The right end of the right fixed shaft 52 is non-rotatably connected to the right lug 21 of the mounting frame 2 through a right flange 53. The left fixed shaft 62 is sleeved on the left rotating frame 61, and the left end of the left fixed shaft 62 is non-rotatably connected to the left lug 22 of the mounting frame 2 through a left flange 63. The left fixed shaft 62 is coaxial with the right fixed shaft 52, and they constitute the rotating shaft for the flat frame 1 to flip relative to the mounting frame 2. The right rotating frame 51 is installed with an angle switch 8, and the angle switch 8 provides an angle signal of relative rotation between the right rotating frame 51 and the right fixed shaft 52.

[0085] The driving assembly composed of the reduction motor 3, the clutch 4, the right rotating frame 51 and the right fixed shaft 52 is the same as the driving assembly in the first embodiment and will not be described in detail.

[0086] For the structure of the gravity balance mechanism in the embodiment of the display flip device, please refer to Figure 8 and Fig. 9 The gravity balance mechanism comprises a left flange 63, a spring seat 77', a left rotating frame part, a rotating part, an eccentric part, a sliding part and an elastic mechanism, etc., which constitute the gravity balance mechanism in this embodiment. The left rotating frame part comprises a left rotating frame 61, a guide block 75 and a cover plate 78; the rotating part comprises a left fixed shaft 62 and an eccentric disk 71; the eccentric part comprises an eccentric portion and a rolling sleeve 73, and the eccentric portion comprises an eccentric pin 72'; the sliding part comprises a slider 74'; the elastic mechanism comprises a spring, and the spring is a tension spring 76'.

[0087] The first bearing 613 and the second bearing 614 are installed in the shaft hole 611 of the left rotating frame 61 close to the mounting frame 2, and the left fixed shaft 62 is inserted into the inner holes of the two bearings 613 and 614. The left end of the left fixed shaft 62 is provided with a relative platform 621 along the outer circumference, and the center hole 631 of the left flange 63 is an oblong hole, and the left end of the left fixed shaft 62 is tightly inserted into the center hole 631 of the left flange 63. The eccentric disk 71 is fixedly installed on the right end of the left fixed shaft 62, and the side (lower side) of the right end surface of the eccentric disk 71 away from the mounting frame 2 is fixedly installed with an eccentric pin 72' extending to the right. The diameter of the eccentric disk 71 is larger than the diameter of the left fixed shaft 62 to increase the distance between the eccentric pin 72' and the axis of the left fixed shaft 62. The rolling sleeve 73 can be rolled on the eccentric pin 72'.

[0088] The guide block 75 is installed on the right side surface of the left rotating frame 61 away from the mounting frame 2. A longitudinal guide groove 751 is opened on the right side surface of the guide block 75. The middle part of the slider 74' is a long guide rod 741', and an action plate is fixed on the upper end of the guide rod 741'. The action plate is a pressure plate 742', and the pressure plate has a contact part. The lower end of the guide rod 741' is provided with a connecting seat, and the connecting seat is a claw 743'. The pressure plate 742' at the upper end of the slider 74' is not bent and is perpendicular to the guide rod 741'. The guide rod 741' of the slider 74' is slidably embedded in the guide groove 751 of the guide block 75, and the cover plate 78 covers the right end surface of the guide block 75, limiting the slider 74' to only slide up and down relative to the guide block 75. Two tension springs 76' arranged side by side are respectively placed on both sides of the middle and lower part of the guide rod 741', and their lower ends are respectively connected to the claws 743' at the lower end of the guide rod 741' of the slider 74', and their upper ends are respectively connected to the spring seat 77' fixed on the flat frame 1 and close to the guide block 75. The two tension springs 76 pull the slider 74' upward, so that the contact part of the pressure plate 74' of the slider 74' is pressed against the outer peripheral surface of the roller sleeve 73 on the eccentric pin 72'. Among them, the guide block, the spring seat, the spring and the connecting seat are arranged in sequence under the eccentric pin 72.

[0089] Normally, the display panel 9 and the flat rack 1 are flipped to the right and close to the roof of the vehicle, and are roughly horizontal. The guide rod 741' and two tension springs 76' of the slider 74' extend roughly horizontally to the right. Under the tension of the tension spring, the left side of the top surface of the pressure plate 742' of the slider 74' presses against the outer peripheral surface of the roller sleeve 73 on the eccentric pin 72', that is, the contact part presses against the outer peripheral surface of the roller sleeve, and the contact part applies force to the eccentric part. The gravity G1 of the display panel 9 and the flat rack 1 generates a gravity moment of clockwise downward flipping relative to the axis of the left fixed shaft 62. Two tension springs 76' apply a leftward thrust to the eccentric pin 72' through the pressure plate 742' of the slider 74'. Since the eccentric pin 72', the eccentric disk 71 and the left fixed shaft 62 are all fixed, they will neither move nor rotate relative to the axis of the left fixed shaft 62. On the contrary, the reaction force exerted by the outer peripheral surface of the roller sleeve 73 on the eccentric pin 72' on the pressure plate 742' of the slider 74' causes the slider 74' to generate a reverse torque rotating counterclockwise relative to the axis of the left fixed shaft 62. The reverse torque is transmitted to the flat frame 1 through the guide block 75, which greatly offsets the above-mentioned gravity torque, greatly reduces the overturning torque effect exerted by the gravity G1 of the display panel 9 and the flat frame 1 on the output shaft 31 of the reduction motor, and improves the locking ability of the display panel 9 and the flat frame 1 when they are in a horizontal state.

[0090] When the display panel 9 and the flat panel frame 1 are in a downward upright state, or once the display panel 9 and the flat panel frame 1 are flipped to the left and close to the roof of the vehicle and remain roughly horizontal, a reverse torque can be generated. The reverse torque is transmitted to the flat panel frame 1 through the guide block 75, which greatly offsets the above-mentioned gravity torque, greatly reduces the overturning torque effect exerted by the gravity G1 of the display panel 9 and the flat panel frame 1 on the output shaft 31 of the reduction motor, and improves the locking ability of the display panel 9 and the flat panel frame 1 in a horizontal state.

[0091] The eccentric pin is fixedly mounted on the side of the eccentric disk away from the mounting frame, and the pressure plate on the upper end of the slider is perpendicular to the guide rod. This structural form is compact and has good integrity.

[0092] Embodiment 3

[0093] The structure of the flip device of the vehicle-mounted display is different from that of the first embodiment in that:

[0094] Please see Fig.10 The drive mechanism and the gravity balance mechanism are respectively arranged on both sides of the flat frame 1, such as on the right side and the left side, so as to reduce the thickness of the flat frame, make the thickness of the display and the flat frame thinner, and make the layout reasonable and the structure compact. The drive mechanism is fixedly installed on the right side of the mounting frame 2, for example, it can be fixedly installed on the mounting frame 2 ( Fig.10The driving mechanism is connected to the flat frame 1 to drive the flat frame 1 to rotate around the rotating shaft. As required, the driving mechanism includes a motor 3 with a clutch inside and a driving shaft 35 connected to the motor 3. The driving shaft 35 and the flat frame 1 are connected to each other in a non-rotatable manner so that the flat frame 1 is driven to rotate by rotating the driving shaft 35. The axis of the driving shaft 35 coincides with the axis of the left fixed shaft, and the driving shaft and the fixed shaft cooperate to form a rotating shaft for the rotation of the flat frame.

[0095] For the structure of the gravity balance mechanism of the display flipping device of this embodiment, please refer to Fig.11 and Fig.12 . The gravity balancing mechanism includes a left flange 63, a left rotating frame part, a rotating part, an eccentric part, a sliding part and an elastic mechanism. The left flange 63 and the flat frame 1 are relatively fixed, and the left rotating frame part is fixedly connected to the mounting frame 2. In addition to the left rotating frame 61, the guide block 75 and the cover plate 78, the left rotating frame part also includes a fixed seat 79; the rotating part includes a left fixed shaft 62 and an eccentric disk 71, the left fixed shaft 62 and the left flange 63 are connected together so as not to rotate relative to each other, the eccentric disk 71 is fixedly connected to the left fixed shaft 62, and the eccentric disk refers to a disk body fixedly connected to the eccentric pin; the eccentric part includes an eccentric portion and a roller sleeve 73, the eccentric portion includes an eccentric pin 72, the eccentric pin is fixedly connected to the eccentric disk, the roller sleeve is sleeved outside the eccentric pin, and the eccentric pin is arranged on the upper side; the sliding part includes a slider 74; the elastic mechanism includes a spring, and the spring is a tension spring 76.

[0096] The slider 74 is provided with a guide rod 741, and the slider 74 has a first end portion and a second end portion; the first end portion is provided with a through portion 744 that penetrates left and right, and the through portion 744 has an inner wall, and the inner wall has a contact portion; the second end portion is provided with a connecting seat, and the connecting seat includes a positioning pin 745 fixedly connected to the second end portion. The guide rod 741 of the slider 74 is slidably embedded in the guide groove 751 of the guide block 75, and the cover plate 78 covers the right end surface of the guide block 75, limiting the slider 74 to only slide up and down relative to the guide block 75.

[0097] The left rotating frame 61 is fixedly connected to the mounting frame 1 and the right end face (back face) of the left rotating frame 61 is located on the left side of the flat frame 1, and the eccentric part is located in the through-portion 744; the left rotating frame 61 is fixedly connected to the fixed seat 79, and the fixed seat 79 is provided with a spring seat 77; the lower end of the tension spring 76 is connected to the spring seat 77, and the upper end is connected to the positioning pin 745, and the contact part and the lower end of the tension spring 76 are respectively located on both sides of the eccentric part. The tension spring 76 pulls the slider 74 so that the slider 74 receives the tension of the tension spring 76. Under the action of the tension, the contact part of the inner wall of the through-portion 744 contacts the outer peripheral wall of the rolling sleeve, and the contact part presses against the contact eccentric part to apply a force to the eccentric part. Through the tension, the eccentric part directly receives a reverse torque to balance the gravity torque generated by the flat frame and the display. Among them: the guide block, the connecting seat, the spring and the spring seat are arranged under the eccentric pin in sequence.

[0098] Further: a connection structure is provided on the back of the left rotating frame 61, and a fixed seat 79 is fixedly connected to the left rotating frame and located on the connection structure, so that the back of the left rotating frame is flush with the back of the fixed seat, so as to further make the structure more compact; a concave guide fixed groove is provided on the left end face (front face) of the left rotating frame 61, a guide block is fixedly arranged in the fixed groove and the guide groove opening of the guide block faces left, and a cover plate is fixedly connected to the opening of the guide groove of the guide block. A U-shaped notch 612 is provided on the right end face of the left rotating frame 61, and the fixed seat 79 includes a bottom plate, two side plates respectively fixedly connected to the two sides of the bottom plate, and a lower plate fixedly connected to the lower side of the bottom plate, so that the fixed seat forms a receiving cavity, and the bottom plate and the two side plates cooperate to adapt to the U-shaped notch, so that the back of the fixed seat is flush with the back of the left rotating frame, and the spring is located in the receiving cavity.

[0099] Further: the penetration part 744 is an L-shaped structure, the L-shaped structure includes a base 7441 and a protrusion 7442 connected to the base, the base and the protrusion are arranged along the tension direction generated by the elastic mechanism, the side wall of the base facing the protrusion constitutes the above-mentioned contact part, one end of the base 7441 is connected to the side of the slider, and the connection 7443 between the protrusion and the base is rounded. The penetration part is L-shaped, which does not interfere with the activity of the eccentric part and can also play a role in guiding the force.

[0100] Embodiment 4

[0101] The structure of the flip device of the vehicle display of the third embodiment is different from that of the vehicle display of the third embodiment in that: Fig.13 , neither end of the base 7441 extends to the side of the slider.

[0102] Embodiment 5

[0103] The structure of the flip device of the vehicle display of the third embodiment is different from that of the vehicle display of the third embodiment in that: Fig.14The through-portion 744 is in a convex shape, and the convex structure includes a base 7441 and a protrusion 7442 connected to the base. The base and the protrusion are arranged along the direction of the tension generated by the elastic mechanism, and the side wall of the base facing the protrusion constitutes the above-mentioned contact part. The protrusion is in an arc-shaped structure, and the connection 7443 between the protrusion and the base is rounded. The through-portion is in a convex shape, which does not interfere with the activity of the eccentric part and can also play a role in guiding the force.

[0104] Embodiment 6

[0105] The structure of the flip device of the vehicle display of the third embodiment is different from that of the vehicle display of the third embodiment in that: Fig.15 and Fig.16 , the eccentric pin is arranged on the lower side; a connecting seat is arranged at the lower end of the slider, the connecting seat includes a first push plate 746, and an action plate is arranged at the upper end of the slider, and the action plate has a contact portion; the spring seat fixed on the fixed seat 79 includes a second push plate 791; the spring of the elastic mechanism includes a compression spring 761, the upper end of the compression spring 761 presses against the first push plate 746 of the connecting seat, and the lower end presses against the second push plate 791 of the spring seat, so that the slider 74 is subjected to the thrust of the compression spring 761, and under the action of the thrust, the contact part of the slider presses against the outer peripheral wall of the roller sleeve to apply a force to the eccentric part, and the force generates a reverse torque to balance the gravity torque. Among them: the guide block, the connecting seat, the spring and the spring seat are arranged under the eccentric pin in sequence. According to needs, the upper end of the cover plate 78 has an extension portion extending above the guide block, the end of the extension portion is concave to form a middle notch 782, and the end of the extension portion extends to the right to form a boss 781, and the boss constitutes a limit boss with opening and closing.

[0106] Embodiment 7

[0107] The structure of the flip device of the vehicle display of the sixth embodiment is different from that of the vehicle display of the sixth embodiment in that: Fig.17 , the cover plate 78 has no protruding portion.

[0108] Embodiment 8

[0109] The structure of the flip device of the vehicle display of the second embodiment is different from that of the vehicle display of the second embodiment in that: Fig.18 and Fig.19, the eccentric pin is arranged on the upper side; a connecting seat is arranged at the lower end of the slider, the connecting seat includes a first push plate 746, and an action plate is arranged at the upper end of the slider, the action plate has a contact portion; a box body is fixedly connected to the connecting frame or the left rotating frame, the box body includes a bottom plate, two side plates respectively fixed to the two sides of the bottom plate and a lower plate fixed to the lower side of the bottom plate, the box body has an opening facing upward and an opening facing forward, and the lower plate constitutes a second push plate 791; the spring of the elastic mechanism includes a compression spring 761, and the compression spring 761 is located in the box body; the upper end of the compression spring 761 presses against the first push plate 746 of the connecting seat, and the lower end presses against the second push plate 791 of the spring seat, so that the slider 74' receives the thrust of the compression spring 761, and under the action of the thrust, the contact part of the slider presses against the outer peripheral wall of the rolling sleeve to apply an action force to the eccentric part, and the action force generates a reverse torque to balance the gravity torque. Wherein: the guide block, the connecting seat, the spring and the spring seat are arranged under the eccentric pin in sequence.

[0110] Embodiment 9

[0111] The structure of the flip device of the vehicle display of the second embodiment is different from that of the vehicle display of the second embodiment in that: Fig. 20 and Fig.21 The gravity balance mechanism includes a left flange 63, a left rotating frame, a rotating part, an eccentric part, a sliding part and an elastic mechanism. The left rotating frame includes a left rotating frame 61, a guide block 75' and a cover plate 78; the rotating part includes a left fixed shaft 62 and an eccentric disk 71, the left fixed shaft 62 and the left flange 63 are connected together so as not to rotate relative to each other, the eccentric disk 71 is fixedly connected to the left fixed shaft 62, and the eccentric disk refers to a disk body fixedly connected to the eccentric pin; the eccentric part includes an eccentric portion and a rolling sleeve 73, the eccentric portion includes an eccentric pin 72, the eccentric pin is fixedly connected to the eccentric disk, the rolling sleeve is sleeved outside the eccentric pin, and the eccentric pin is arranged on the lower side; the sliding part includes a slider 74'; the elastic mechanism includes a spring, and the spring is a tension spring 76'.

[0112] The slider 74' is provided with a guide rod 741', and the slider 74' has a first end portion and a second end portion; the first end portion is provided with a through portion 744 that penetrates left and right, and the through portion 744 has an inner wall, and the inner wall has a contact portion; the second end portion is provided with a connecting seat. The guide rod 741' of the slider 74' is slidably embedded in the guide groove 751' of the guide block 75', and the cover plate 78 covers the right end surface of the guide block 75, limiting the slider 74' to only slide up and down relative to the guide block 75'.

[0113] The eccentric part is located in the through-portion 744; a box body is fixed on the flat frame or the left rotating frame, and the box body includes a bottom plate, two side plates respectively fixed on both sides of the bottom plate, and a lower plate fixed on the lower side of the bottom plate. The box body has an opening facing upward and an opening facing forward, and a spring seat 77' is provided on the lower plate; a tension spring 76' is located in the box body, and the lower end of the tension spring is connected to the spring seat 77', and the upper end is connected to the connecting seat, and the contact part and the lower end of the tension spring 76' are respectively located on both sides of the eccentric part. The tension spring 76' pulls the slider 74' so that the slider 74' receives the tension of the tension spring 76'. Under the action of the tension, the contact part of the inner wall of the through-portion 744 contacts the outer peripheral wall of the rolling sleeve, and the contact part presses against the contact eccentric part to apply a force to the eccentric part, and the force generates a reverse torque to balance the gravity torque. Among them: the guide block, the connecting seat, the spring and the spring seat are arranged under the eccentric pin in sequence.

[0114] Further: the through portion 744 is a convex structure, the convex structure includes a base 7441 and a protrusion connected to the base, the base and the protrusion are arranged along the tension direction generated by the elastic mechanism, and the side wall of the base facing the protrusion constitutes the above-mentioned contact part. The protrusion is an arc structure, and the connection between the protrusion and the base is rounded.

[0115] Embodiment 10

[0116] The structure of the flip device of the vehicle display of the second embodiment is different from that of the vehicle display of the second embodiment in that: Fig. 22 and Fig.23 The two spring seats 77' are fixed on the cover plate 78 and the rotating frame respectively.

[0117] The flipping device of the vehicle display of each embodiment of the present invention has fewer additional parts and a simple structure compared to the prior art, low cost, good technical effect of protecting the reduction motor, and good reliability. It has strong impact resistance and is suitable for reducing the thickness of the whole machine. In particular, in special circumstances, regardless of whether the display has power, the personnel on the vehicle can forcibly push the flat frame and the display panel forward or backward, and force the flat frame and the display panel to be retracted close to the roof of the vehicle without damaging the reduction motor, so as to provide a smooth passage for the evacuation of the personnel on the vehicle. This is a beneficial effect that could not be predicted in advance. The new technical standards of this industry put forward this requirement for the safety of use; but the prior art has not yet been able to achieve it. The present invention solves this problem while achieving the purpose of the invention. Therefore, the gravity balance mechanism of the display flipping device of the present invention has a commercial prospect of popularization and promotion.

[0118] The above is only a preferred embodiment of the flip device of the vehicle-mounted display of the present invention, but it does not limit the scope of implementation of the present invention. Equivalent changes and modifications made according to the technical solution of the present invention and the contents of the specification, for example, first make the guide block and the cover plate into an integrated guide block, and make the guide rod, pressure plate and claw of the slider separately. During assembly, the guide rod is slidably inserted into the guide groove, and then the pressure plate and the claw are respectively welded to the two ends of the guide rod to form a complete slider, and finally the guide block with the slider installed is directly fixed on the flat frame; all of the above should fall within the scope of the present invention.

Claims

1. A flip device for a vehicle-mounted display, comprising two frames, the two frames being a mounting frame and a connecting frame respectively, the two frames being provided with a rotating part and a rotating frame part respectively, and the rotating part and the rotating frame part can rotate relative to each other; characterized in that: It also includes an eccentric part, a movable part and an elastic mechanism; the eccentric part and the rotating part are relatively fixed and the eccentric part is eccentrically arranged relative to the relative rotation axis of the rotating part and the rotating frame part; the movable part and the rotating frame part can move relatively, and the movable part and the rotating frame part can slide relatively, so that the movable part constitutes a sliding part; The elastic mechanism is connected to the movable part and can generate an elastic force applied to the movable part. The elastic force generated by the elastic mechanism is a pulling force or a pushing force. The movable part is subjected to the pulling force and is pressed against the eccentric part to apply a force to the eccentric part, or the movable part is subjected to the pushing force and is pressed against the eccentric part to apply a force to the eccentric part. The movable part has a contact portion that is pressed against the eccentric part. Under the action of the elastic force, the movable part and the eccentric part are in contact and the eccentric part is also subjected to the force applied by the movable part.

2. The flip device of the vehicle-mounted display according to claim 1, characterized in that: The movable part is provided with a through part, the through part has an inner wall, the inner wall has the above-mentioned contact part, the eccentric part is at least partially located in the through part, the contact part and the eccentric part are in contact, and the contact part is pressed against the eccentric part under the tension generated by the elastic mechanism.

3. The flip device of the vehicle-mounted display according to claim 1, characterized in that: The movable part comprises an action plate, and the action plate has the above-mentioned contact part, and the contact part is in contact with the eccentric part. Under the action of the tension generated by the elastic mechanism, the contact part is pressed against the eccentric part.

4. The flip device of the vehicle-mounted display according to claim 3, characterized in that: The movable part comprises a fixedly connected slider and the above-mentioned action plate, the slider and the rotating frame part can slide relative to each other, and the action plate and the slider are arranged to intersect.

5. The flip device of the vehicle-mounted display according to any one of claims 1 to 4, characterized in that: The eccentric part comprises an eccentric portion and a rolling sleeve which is rotatably sleeved outside the eccentric portion. The movable part is in contact with the rolling sleeve and the force exerted by the movable part acts on the outer peripheral wall of the rolling sleeve.

6. The flip device for a vehicle-mounted display according to any one of claims 1 to 4, characterized in that: The sliding direction of the movable part and the rotation axis of the rotating part intersect vertically.

7. The flip device for a vehicle-mounted display according to any one of claims 1 to 4, characterized in that: The frame with the rotating part is the first frame, and the frame with the rotating frame part is the second frame; the elastic mechanism has a first end and a second end connected to the movable part, and the first end of the elastic mechanism is connected to the second frame.

8. The flip device for a vehicle-mounted display according to any one of claims 1 to 4, characterized in that: The frame body provided with the rotating part is the first frame body, and the frame body provided with the rotating frame part is the second frame body; the first frame body is the mounting frame, and the second frame body is the connecting frame.

9. The flip device for a vehicle-mounted display according to any one of claims 1 to 4, characterized in that: The frame body provided with the rotating part is the first frame body, and the frame body provided with the rotating frame part is the second frame body; the first frame body is the connecting frame, and the second frame body is the mounting frame.

10. The flip device of the vehicle-mounted display according to any one of claims 1 to 4, characterized in that: The elastic mechanism has a first end and a second end connected to the movable part, and the first end of the elastic mechanism is connected to the rotating frame part.

11. The flip device of the vehicle-mounted display according to claim 1, characterized in that: The movable part is provided with a connecting seat, and the rotating frame part is provided with a spring seat; the elastic mechanism comprises a spring, one end of the spring is connected to the spring seat, and the other end is connected to the connecting seat.

12. The flip device of the vehicle-mounted display according to claim 11, characterized in that: The rotating frame part includes a rotating frame and a fixed seat fixed to the rotating frame, and the fixed seat is provided with the above-mentioned spring seat; the movable part includes a slider, and the rotating frame part is provided with a guide groove, and the slider is adapted to be connected to the guide groove; the rotating frame has two sides arranged front and back, the guide groove is located on one side, and a connecting structure is provided on the other side, and the fixing seat is adapted to be fixed to the connecting structure.

13. The flip device of the vehicle-mounted display according to claim 12, characterized in that: The guide groove is located on the front side of the rotating frame, the back side of the rotating frame is provided with the above-mentioned connecting structure, and the back side of the rotating frame is flush with the back side of the fixing seat.

14. The flip device of the vehicle-mounted display according to claim 12, characterized in that: The fixing seat is provided with a receiving cavity, and the spring is located in the receiving cavity.

15. The flip device of the vehicle-mounted display according to claim 1, characterized in that: The movable part has a guide rod, which is slidably connected to a guide groove provided in the rotating frame part; the movable part has a first end part and a second end part, the first end part is provided with the above-mentioned contact part, and the second end part is provided with a connecting seat; the elastic mechanism has a first end and a second end connected to the movable part, and the second end of the elastic mechanism is connected to the connecting seat.

16. The flip device of the vehicle-mounted display according to any one of claims 1 to 4, characterized in that: The frame with the rotating part is the first frame, and the frame with the rotating frame is the second frame; the rotating part at least partially extends out of the side wall of the first frame, and the rotating frame is located on the side of the second frame.

17. The flip device of the vehicle-mounted display according to any one of claims 1 to 4, characterized in that: The rotating part includes a fixed shaft fixedly connected to the first frame body and an eccentric disk fixedly connected to the fixed shaft, the eccentric part includes an eccentric portion, the eccentric portion is fixedly arranged on the eccentric disk, and the axis of the fixed shaft coincides with the axis of rotation of the rotating part; the rotating frame part includes a rotating frame and a guide groove fixedly connected together, the movable part has a slider, the slider is provided with a guide rod, the guide rod is slidably connected in the guide groove, and the lower end of the slider is provided with a connecting seat; the rotating frame part is provided with a spring seat; the upper end of the elastic mechanism is connected to the connecting seat at the lower end of the slider, and the lower end is connected to the spring seat; the guide groove and the spring seat are sequentially arranged below the eccentric disk.

18. The flip device of the vehicle-mounted display according to any one of claims 1 to 4, characterized in that: The rotating part includes a fixed shaft fixedly connected to the first frame body and an eccentric disk fixedly connected to the fixed shaft, the eccentric part includes an eccentric portion, the eccentric portion is fixedly arranged on the eccentric disk, and the axis of the fixed shaft coincides with the axis of rotation of the rotating part; the rotating frame part includes a rotating frame and a guide groove fixedly connected together, the movable part has a slider, a guide rod is provided in the middle of the slider, the guide rod is slidably connected in the guide groove, and a connecting seat is provided at the lower end of the slider; the rotating frame part is provided with a spring seat; the lower end of the elastic mechanism is connected to the connecting seat at the lower end of the slider, and the upper end is connected to the spring seat; the guide groove and the spring seat are sequentially arranged below the eccentric disk.

19. The flip device of the vehicle-mounted display according to claim 1, characterized in that: It also includes a driving mechanism, which is installed on the connecting frame and is transmission-connected to the mounting frame.

20. The flip device of the vehicle-mounted display according to claim 1, characterized in that: It also includes a driving mechanism, which is installed on the mounting frame and is transmission-connected to the connecting frame.

21. The flip device for a vehicle-mounted display according to claim 19 or 20, characterized in that: It also includes a gravity balancing mechanism, which includes the above-mentioned rotating part, rotating frame part, eccentric part, movable part and elastic mechanism; the gravity balancing mechanism and driving mechanism are respectively arranged on both sides of the connecting frame.

22. The flip device of the vehicle-mounted display according to any one of claims 1 to 4, characterized in that: The rotating part includes a fixed shaft fixedly connected to the first frame body and an eccentric disk fixedly connected to the fixed shaft, the eccentric part includes an eccentric portion, the eccentric portion is fixedly arranged on the eccentric disk, and the axis of the fixed shaft coincides with the axis of rotation of the rotating part; the rotating frame part includes a rotating frame and a guide groove fixedly connected together, the movable part has a slider, a guide rod is provided in the middle of the slider, the guide rod is slidably connected in the guide groove, and a connecting seat is provided at the lower end of the slider; the connecting frame is connected to the rotating frame part, and a spring seat is provided on the connecting frame; the lower end of the elastic mechanism is connected to the connecting seat at the lower end of the slider, and the upper end is connected to the spring seat; the guide groove and the spring seat are sequentially arranged below the eccentric disk.

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