Rotary hinge mechanism and vehicle-mounted ceiling screen

Abstract

The application relates to the technical field of ceiling screens, solves the technical problems of poor rotation hinge damping texture and poor user experience of a manual ceiling screen, and provides a rotation hinge mechanism and a vehicle-mounted ceiling screen. The rotation hinge mechanism comprises a seat body and a circular rotating shaft. The seat body is provided with a damping piece. The damping piece comprises at least one shaft sleeve. Each shaft sleeve comprises a through hole. The inner wall of the through hole is provided with a flattening surface. The circular rotating shaft comprises at least one damping shaft section. The circumferential surface of each damping shaft section is provided with a rotating shaft surface. The damping shaft section is rotationally arranged in the corresponding through hole. The application has the beneficial effect that when the damping shaft section rotates to the position where the rotating shaft surface abuts against the flattening surface of the inner wall of the shaft sleeve, a rotation torque is generated between the two surfaces, the multi-stage rotation torque change of the rotation hinge mechanism is realized, better rotation damping texture is brought, and the user experience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ceiling screens, and in particular to a rotary hinge mechanism with multi-stage rotary torque variation and a vehicle-mounted ceiling screen. BACKGROUND

[0002] In recent years, new energy vehicles have gradually gained strength, vehicle-mounted entertainment functions have rapidly popularized, and the scheme of vehicle-mounted ceiling screens is gradually gaining favor in the market.

[0003] Electric ceiling screens provide good user experience, but their cost is relatively high, which is not conducive to popularization and use in vehicles of all levels. Manual ceiling screens have relatively low cost, but most manual ceiling screens use relatively low-end rotary hinge mechanisms. Although the price is low, the damping texture is not good, the operating force is large during the full stroke operation in the manual screen opening process, the comfort is poor, which gives users a bad impression of low quality and poor quality, and is not conducive to the user's overall vehicle use experience. The use of higher-end rotary hinge mechanisms such as hydraulic dampening hinges can improve the user's manual screen opening experience, but the structure of the rotary hinge mechanism is relatively complex, the production and purchase cost is relatively high, and it does not meet the low-cost control requirements of manual ceiling screens. In addition, the complex structure design leads to a relatively high failure rate, and the cost of user's later use and maintenance is also relatively high.

[0004] Therefore, it is necessary to improve the rotary hinge mechanism used in the existing vehicle-mounted ceiling screen to overcome the above problems. SUMMARY

[0005] To solve the above technical problems, the present application provides a rotary hinge mechanism whose rotary torque can change with the change of the rotation angle and a vehicle-mounted ceiling screen using the rotary hinge mechanism.

[0006] To solve the above problems, one aspect of the present application provides a rotary hinge mechanism, which comprises a seat body and a circular shaft, wherein the seat body is provided with a damping member, the damping member comprises at least one shaft sleeve, each shaft sleeve comprises a through hole, and the inner wall of the through hole is provided with a flattening surface.

[0007] The circular shaft comprises at least one damping shaft segment, and the peripheral surface of each damping shaft segment is provided with a shaft surface; wherein the damping shaft segment is rotatably accommodated in the corresponding through hole, and the damping shaft segment is rotated to slide against the flattening surface and generate a rotary torque when the shaft surface of the damping shaft segment slides against the flattening surface.

[0008] In some embodiments, the circular shaft comprises N damping shaft segments, where N is greater than or equal to 2, and the damping shaft segments are sequentially and spaced apart along the axis of the circular shaft.

[0009] The shaft surfaces of the damping shaft segments are staggered.

[0010] The number of the shaft sleeves is same as that of the damping shaft segments, and each of the shaft sleeves wraps a corresponding damping shaft segment.

[0011] In some embodiments, along the axial direction of the circular rotating shaft, the rotating shaft planes of the damping shaft segments are arranged spirally around the axis of the circular rotating shaft.

[0012] In some embodiments, along the axial direction of the circular rotating shaft, with a horizontal plane passing through the axis as a reference plane, the rotating shaft planes of the damping shaft segments gradually increase or decrease in the inclination angle compared to the reference plane.

[0013] In some embodiments, along the axial direction of the circular rotating shaft, the rotating shaft planes of the damping shaft segments gradually increase or decrease in the area.

[0014] In some embodiments, the rotating hinge mechanism further comprises a locking feel pad;

[0015] The locking feel pad is fixed on the circular rotating shaft;

[0016] An outer wall of the locking feel pad is provided with a positioning groove;

[0017] The seat body is further provided with a limiting assembly, which elastically abuts against the outer wall of the locking feel pad and can be buckled in the positioning groove when the locking feel pad rotates to a preset angle.

[0018] In some embodiments, the limiting assembly comprises an elastic member and a positioning bump bead connected with the elastic member, wherein the elastic member automatically drives the positioning bump bead to elastically abut against the outer wall of the locking feel pad;

[0019] The positioning bump bead slides into the positioning groove when the locking feel pad rotates to a preset angle along with the circular rotating shaft.

[0020] In some embodiments, the limiting assembly comprises a limiting spring piece; the limiting spring piece comprises a fixed part, an elastic abutting part formed by bending and extending from the fixed part, wherein the fixed part is fixedly connected with the seat body, and the elastic abutting part elastically abuts against the outer wall of the locking feel pad;

[0021] The elastic abutting part slides into the positioning groove when the locking feel pad rotates to a preset angle along with the circular rotating shaft.

[0022] In some embodiments, one end of the circular rotating shaft connected with the seat body is provided with a limiting boss; the seat body is provided with a stop boss;

[0023] When the circular rotating shaft rotates to a preset angle, the limiting boss abuts against the stop boss to prevent the circular rotating shaft from continuing to rotate.

[0024] To solve the above problems, another aspect of the present application provides a vehicle ceiling suction screen, which is arranged on a ceiling of a vehicle, and comprises a screen base, a display screen and a rotary hinge mechanism, the screen base is fixed on the ceiling, the display screen is rotatably connected to the screen base through the rotary hinge mechanism, and the rotary hinge mechanism is as described above; wherein,

[0025] The seat body is fixedly connected with one of the screen base and the display screen, and the circular rotating shaft is fixedly connected with the other one of the screen base and the display screen.

[0026] The beneficial effects of the present application are: the rotary hinge mechanism and the vehicle ceiling suction screen provided by the present application, wherein the rotary hinge mechanism comprises a seat body and a circular rotating shaft, the seat body is provided with a damping member, the damping member comprises at least one shaft sleeve, a flattening surface is arranged on the inner wall of the through hole of each shaft sleeve, the circular rotating shaft comprises at least one damping shaft section, a rotating shaft flattening surface is arranged on the circumferential surface of each damping shaft section, and each damping shaft section is rotatably accommodated in the through hole of the corresponding shaft sleeve. Compared with the existing hinge structure, when the circular rotating shaft of the rotary hinge mechanism provided by the present application rotates, the rotating shaft flattening surface on each damping shaft section slides against the flattening surface on the corresponding shaft sleeve, so that a variable rotating torque is generated between the contact surfaces of each damping shaft section and the corresponding shaft sleeve, the multi-stage rotating torque change of the rotary hinge mechanism is realized, a better rotating damping texture is brought, and the user experience can be significantly improved when the rotary hinge mechanism is applied in a manual vehicle ceiling suction screen.

[0027] In addition, the structure of the rotary hinge mechanism provided by the present application is relatively simple, the production, purchase cost and use failure rate are also lower, and when the rotary hinge mechanism is applied in a manual vehicle ceiling suction screen, not only the cost of the suction screen can be significantly reduced, but also the user experience is guaranteed, which is conducive to popularization and use in vehicles of all levels. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work, wherein:

[0029] Figure 1 is a schematic diagram of the overall cross-sectional structure of the rotary hinge mechanism of the present application, the rotary hinge mechanism comprises a seat body, a circular rotating shaft and a damping member;

[0030] Figure 2 is a schematic diagram of the overall structure of the rotary hinge mechanism of the present application;

[0031] Figure 3 is Figure 1 is a structural schematic diagram of the damping member after being unfolded;

[0032] Figure 4 is Figure 1 is a structural schematic diagram of the circular rotating shaft;

[0033] Figure 5 is Figure 1 is a three-dimensional assembly structural schematic diagram of the circular rotating shaft and the damping member;

[0034] Figure 6 is Figure 1 is an assembly structural front view of the circular rotating shaft and the damping member;

[0035] Figure 7 is Figure 1 is a sectional structural schematic diagram of the circular rotating shaft;

[0036] Figure 8 is Figure 1 is a sectional structural schematic diagram of the circular rotating shaft and the damping member;

[0037] Figure 9 is Figure 2 is a sectional structural schematic diagram of one end;

[0038] Figure 10 is Figure 2 is a sectional structural schematic diagram of the other end;

[0039] Figure 11 is an explosion structural schematic diagram of the vehicle-mounted ceiling screen.

[0040] Wherein: 100. rotating hinge mechanism, 101. mounting plate, 10. axis, 20. reference surface, 1. seat body, 11. accommodating cavity, 12. mounting groove, 13. stop boss, 2. circular rotating shaft, 21. damping shaft section, 211. rotating shaft plane, 22. initial shaft section, 23. limiting boss, 3. damping member, 30. elastic steel plate, 301. slot, 31. shaft sleeve, 311. pressing plane, 32. initial shaft sleeve, 4. locking gasket, 41. positioning groove, 411. first positioning groove, 412. second positioning groove, 5. positioning bump bead structure, 51. stud, 52. elastic member, 53. positioning bump bead, 6. limiting spring piece, 61. fixed part, 62. elastic abutting part, 7. screen base, 71. base fixed plate, 72. decorative inner plate, 8. display screen, 9. screen locking mechanism. DETAILED DESCRIPTION

[0041] With reference to the accompanying drawings: the embodiments of the present application will be described below in detail, which are clear and complete. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. According to the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0042] Referring to Figures 1 to 6 According to one aspect of the present application, a rotary hinge mechanism 100 is provided, which comprises a seat body 1 and a circular rotating shaft 2. The seat body 1 is provided with a receiving cavity 11 penetrating through the body, and a damping member 3 is fixedly connected in the receiving cavity 11.

[0043] The damping member 3 comprises at least one shaft sleeve 31. Each shaft sleeve 31 comprises a through hole (not labeled), and a flattening surface 311 is arranged on the inner wall of the through hole. The distance between the flattening surface 311 and the axis 10 of the through hole is less than half the inner diameter of the through hole, so that the flattening surface 311 forms a planar structure intruding into the inner side of the through hole compared with the arc-shaped inner wall of the through hole.

[0044] The circular rotating shaft 2 is a cylindrical structure, which is coaxially connected in the shaft sleeve 31 of the damping member 3, and along the axis 10 direction, the circular rotating shaft 2 comprises at least one damping shaft segment 21. Each damping shaft segment 21 is provided with a rotating shaft plane 211 on the peripheral surface. The distance between the rotating shaft plane 211 and the axis 10 of the circular rotating shaft 2 is less than the radius of the damping shaft segment 21, so that the rotating shaft plane 211 forms a planar structure intruding into the inner side of the damping shaft segment 21 compared with the arc-shaped outer wall of the damping shaft segment 21.

[0045] The damping shaft segment 21 is rotatably accommodated in the through hole of the corresponding shaft sleeve 31, and the damping shaft segment 21 is rotated to slide against and abut against the flattening surface 311 of the flattening surface 311 to generate a rotary torque.

[0046] Compared with the existing hinge structure, the rotary hinge mechanism provided by the present application can generate a changing rotary torque between the contact plane of each damping shaft segment 21 and the corresponding shaft sleeve 31 when the circular rotating shaft 2 rotates, so as to realize the multi-stage rotary torque change of the rotary hinge mechanism 100, and can bring a better rotary damping texture, and can significantly improve the user experience when applied in a manual vehicle-mounted ceiling screen.

[0047] In addition, the structure of the rotary hinge mechanism provided by the present application is relatively simple, and the production, purchase cost and use failure rate are also lower. When applied in a manual vehicle-mounted ceiling screen, not only the cost of the ceiling screen can be significantly reduced, but also the user experience is guaranteed, which is conducive to popularization and use in vehicles of all levels.

[0048] Referring toFigures 3 to 5 and Figure 8 As shown in FIG. 3, as one of the preferred embodiments of the present application, the damping member 3 is punched from the elastic steel sheet 30, and then is wound from one side end to the other side end to form the shaft sleeve 31 with the slotted 301. After the actual assembly, the one side end of the elastic steel sheet 30 is moderately deformed and expanded outwardly in the accommodating cavity 11, and the other side end of the elastic steel sheet 30 is fixedly connected to the seat body 1. When the circular rotating shaft 2 rotates around the axis 10 to the shaft plane 211 slidingly abutting against the corresponding pressing plane 311, the shaft sleeve 31 is abutted against the corresponding damping shaft segment 21 to be elastically deformed and moderately expanded, so that the circular rotating shaft 2 can continue to rotate around the axis 10, and the varying rotational torque is generated between the contact planes.

[0049] It should be noted that the present embodiment is only one of the preferred embodiments of the damping member 3 of the present application, and is not a limitation of the present application. In other embodiments, the damping member 3 can also be designed as other suitable structures.

[0050] In one of the specific embodiments of the present application, the circular rotating shaft 2 includes two damping shaft segments 21, which are sequentially and spaced apart along the axis 10 of the circular rotating shaft 2, and the shaft planes 211 of the two damping shaft segments 21 are staggered.

[0051] The number of the shaft sleeves 31 is also two, and each shaft sleeve 31 wraps the corresponding damping shaft segment 21. The pressing planes 311 on each shaft sleeve 31 are preferably arranged on the same side of the axis 10. As the circular rotating shaft 2 rotates around the axis 10, the shaft planes 211 of the two damping shaft segments 21 will slide against the corresponding pressing planes 311 in sequence, so that the rotational torque between each damping shaft segment 21 and the corresponding shaft sleeve 31 is generated and superimposed step by step, thereby generating a multi-stage varying damping haptic, and improving the user experience.

[0052] In the present embodiment, two shaft sleeves 31 wrap two damping shaft segments 21 are taken as an example for description. In other embodiments, the number of the damping shaft segments 21 and the corresponding shaft sleeves 31 can also be greater than two. The more the number is, the more the number of the torque change stages of the rotational hinge mechanism 100 is, and the smoother the transition between the torque stages is. The actual manufacturing can be adjusted accordingly as needed.

[0053] Referring to Figure 4 and Figure 6As shown in FIG. 1, in one embodiment of the present application, the rotation axis planes 211 of the damping shaft segments 21 are arranged in a spiral around the axis 10 of the circular rotation shaft 2 along the direction of the axis 10. This design causes the rotation axis planes 211 between the damping shaft segments 21 to change gradually, thereby ensuring that the rotational torque between the damping shaft segments 21 changes gradually, and bringing about a multi-stage change in the damping texture.

[0054] As a preferred embodiment of the present application, the rotation axis planes 211 are formed by cutting the arc-shaped outer wall of the circular rotation shaft 2 along the direction of the axis 10, and extend from the start of the corresponding damping shaft segment 21 to the last damping shaft segment 21 that penetrates the circular rotation shaft 2 along the direction of the axis 10. The rotation axis planes 211 between the damping shaft segments 21 are arranged in a spiral around the axis 10, and share a part of the intersecting side edges between the rotation axis planes 211 between adjacent damping shaft segments 21. This design facilitates the processing of the circular rotation shaft 2, and reduces the production cost of the rotary hinge mechanism 100. In addition, the shared part of the intersecting side edges between the rotation axis planes 211 also enables a smooth transition and change between adjacent rotational torques, further improving the damping texture of the rotary hinge mechanism 100.

[0055] Referring to FIG. 1, Figure 4 and Figure 7 As shown in FIG. 1, in one embodiment of the present application, the inclination angle of the rotation axis planes 211 of the damping shaft segments 21 with respect to the reference plane 20 gradually increases or decreases along the direction of the axis 10 of the circular rotation shaft 2. This design causes the rotation axis planes 211 between the damping shaft segments 21 to change gradually in a gradient manner, ensuring that the rotational torque between the damping shaft segments 21 and the corresponding shaft sleeve 31 changes gradually and in a gradient manner, and ensuring the smoothness of the multi-stage rotational damping, further improving the damping texture.

[0056] Referring to FIG. 1, Figure 4 and Figure 7 As shown in FIG. 1, in one embodiment of the present application, the area of the rotation axis planes 211 of the damping shaft segments 21 gradually increases or decreases along the direction of the axis 10 of the circular rotation shaft 2. Since the rotation axis planes 211 are formed by cutting the circumferential surface of the circular rotation shaft 2, the larger the area, the larger the contact surface between the rotation axis planes 211 and the pressing plane 311 of the corresponding shaft sleeve 31, and the greater the sliding friction damping between them. Combined with the rotational torque generated by the damping shaft segments 21 pressing against the shaft sleeve 31, the rotational damping between the damping shaft segments 21 and the corresponding shaft sleeve 31 changes in a gradient manner, ensuring the gradual change in the multi-stage rotational damping of the rotary hinge mechanism 100.

[0057] Referring to FIG. 1, Figures 3 to 8As shown, in one specific embodiment of this application, the circular shaft 2 further includes an initial shaft segment 22 without a shaft plane 211, and each damping shaft segment 21 is sequentially spaced along the axis 10, starting from the initial shaft segment 22. Correspondingly, the damping member 3 further includes an initial bushing 32 without a pressing plane 31, and each bushing 31 is sequentially spaced along the axis 10, starting from the initial bushing 32. When the circular shaft 2 is rotatably housed in the damping member 3, the initial bushing 32 elastically wraps around the initial shaft segment 22, and each bushing 31 sequentially wraps around the corresponding damping shaft segment 21.

[0058] To facilitate the explanation of the multi-stage damping variation law of the rotary hinge mechanism 100 of this application, the initial shaft segment 22-initial bushing 32 is defined as the first-stage damping segment A, and the subsequent damping shaft segment 21-bushing 31 is defined as the second-stage damping segment B and the third-stage damping segment C, respectively.

[0059] The rotary hinge mechanism 100 in this embodiment has three damping variation sections, which can realize the effect of generating and superimposing three levels of rotary damping of the hinge mechanism step by step. In the first damping section A, during the entire rotation of the circular shaft 2, the arc-shaped outer wall of the initial shaft section 22 slides and abuts against the arc-shaped inner wall of the initial shaft sleeve 32, and the friction between the two generates a continuous and stable rotational torque M1.

[0060] like Figure 8 As shown, in the first stage of the rotation of the circular shaft 2 (within the rotation angle range of a, rotating from the shaft plane 211 to the pressure plane 311 corresponding to the pressure plane 311), the arc-shaped outer wall of the damping shaft section 21 of the secondary damping section 21 contacts and rubs against the arc-shaped inner wall of the corresponding bushing 31. The shaft plane 211 of the damping shaft section 21 has not yet contacted the pressure plane 311 of the corresponding bushing 31. During this process, the rotational torque generated by the secondary damping section B is M2. When the rotation angle of the circular shaft 2 is greater than a, the arc-shaped outer wall of the damping shaft section 21 is partially cut to form a corresponding shaft plane 211, and the corresponding area of ​​the inner wall of the through hole of the corresponding bushing 31 is flattened to form a corresponding pressing plane 311. During the process of the circular shaft 2 rotating clockwise around the axis 10 by an angle a, the shaft plane 211 of its damping shaft section 21 slides against the corresponding pressing plane 311, and a frictional torque is generated between the two planes. The rotational torque increases to M3, M3 > M2.

[0061] The third damping section C is in the front section of the rotation of the circular rotating shaft 2, the arc-shaped outer wall of the damping shaft section 21 is in contact and friction with the arc-shaped inner wall of the corresponding shaft sleeve 31, the structure is the same as that at the second damping section B, and a rotation torque M4 is generated; in the rear section of the rotation of the circular rotating shaft 2, the rotating shaft plane 211 of the third damping section C is staggered with the rotating shaft plane 211 of the second damping section B, in this process, the rotating shaft plane 211 of the damping shaft section 21 of the third damping section C slides against the corresponding pressure plane 311, a friction torque is generated between the two planes, the rotation torque is increased to M5, and M5>M4.

[0062] In summary, in the rotation process of the circular rotating shaft 2, the third rotation torque gradually increases in the order of (M1+M2+M4), (M1+M3+M4) and (M1+M3+M5), the rotation torque between the damping sections of the rotary hinge mechanism 100 gradually changes in a gradient manner, the smooth increase of the multi-stage rotation damping is ensured, and the comfort of the user is significantly improved.

[0063] Referring to FIGS. 1 and 2, Figures 1 to 2 , and Figure 9 In one of the specific embodiments of the present application, the rotary hinge mechanism 100 further comprises a locking feel pad 4 and a limiting assembly cooperating with the locking feel pad 4. The locking feel pad 4 is a circular plate structure, coaxially fixedly connected to one end of the circular rotating shaft 2 and exposed to the damping member 3, and can rotate synchronously with the circular rotating shaft 2 around the axis 10. A positioning groove 41 is arranged on the arc-shaped outer wall of the locking feel pad 4.

[0064] The seat body 1 is provided with a mounting groove 12, the limiting assembly is accommodated in the mounting groove 12 and fixedly connected with the seat body 1, and the limiting assembly elastically abuts against the outer wall of the locking feel pad 4 and can be buckled in the positioning groove 41 when the locking feel pad 4 rotates to a preset angle, thereby generating a locking prompt feeling, reminding the user that the circular rotating shaft 2 has been rotated to the right position, and to a certain extent, the circular rotating shaft 2 is locked, thereby improving the user experience.

[0065] Referring to FIGS. 1 and 2, Figure 9 In one of the specific embodiments of the present application, the limiting assembly comprises a positioning knock bead structure 5, which is adjustably assembled in the mounting groove 12 of the seat body 1 in a threaded fixed manner. The positioning knock bead structure 5 comprises a threaded stud 51 having an inner cavity and being open at one end, an elastic member 52 (preferably a compression spring) accommodated in the inner cavity of the threaded stud 51, and a positioning knock bead 53 movably connected with the elastic member 52 and located at the opening of the inner cavity of the threaded stud 51. Under normal circumstances, the elastic member 52 automatically drives the positioning knock bead 53 to elastically abut against the outer wall of the locking feel pad 4.

[0066] When the locking feeling pad 4 rotates to a preset angle along with the circular rotating shaft 2, the positioning bump bead 53 of the positioning bump bead structure 5 slides into the positioning groove 41, which forms a resistance to the rotation of the locking feeling pad 4, realizes the locking feeling prompt of the coaxial circular rotating shaft 2, and reminds the user that the circular rotating shaft 2 has rotated to the locking position and the rotating hinge mechanism 100 has opened / closed to the position.

[0067] Referring to Figure 1 , Figure 2 and Figure 9 , in one of the specific embodiments of the present application, the limiting component includes a limiting spring sheet 6, which includes a fixed portion 61 and an elastic abutting portion 62 bent and extended from the fixed portion 61, wherein the fixed portion 61 is fixedly connected with the seat body 1, and the elastic abutting portion 62 elastically abuts against the outer wall of the locking feeling pad 4.

[0068] When the locking feeling pad 4 rotates to a preset angle along with the circular rotating shaft 2, the elastic abutting portion 62 of the limiting spring sheet 6 slides into the positioning groove 41, which forms a resistance to the rotation of the locking feeling pad 4, realizes the locking feeling prompt of the coaxial circular rotating shaft 2, and reminds the user that the circular rotating shaft 2 has rotated to the locking position and the rotating hinge mechanism 100 has opened / closed to the position.

[0069] The limiting component of the rotating hinge mechanism 100 can select one of the positioning bump bead structure 5 or the limiting spring sheet 6, which can realize the locking feeling prompt of the circular rotating shaft 2.

[0070] Of course, the limiting component can also simultaneously include the positioning bump bead structure 5 and the limiting spring sheet 6, as shown in Figure 9 , the positioning groove 41 is divided into two, including a first positioning groove 411 and a second positioning groove 412, wherein the positioning bump bead structure 5 can be used to slide into the first positioning groove 411 when the circular rotating shaft 2 rotates to the minimum / maximum rotation angle, and the locking feeling prompt is performed, and in cooperation, the limiting spring sheet 6 can be used to slide into the second positioning groove 412 when the circular rotating shaft 2 rotates to the maximum / minimum rotation angle, and the locking feeling prompt is performed, thereby realizing the double locking feeling prompt function of the opening and closing of the rotating hinge mechanism 100 to the position, and further improving the user experience.

[0071] Referring to Figure 10 , in one of the specific embodiments of the present application, a limiting boss 23 is arranged at one end of the circular rotating shaft 2 rotationally connected with the seat body 1, and a stop boss 13 is further arranged at a corresponding position of the seat body 1.

[0072] When the circular rotating shaft 2 rotates to the maximum preset opening angle of the rotary hinge mechanism 100, the limiting boss 23 abuts against the stop boss 13 to prevent the circular rotating shaft 2 from continuing to rotate, and in cooperation with the design of the limiting assembly described above, the maximum opening angle positioning and locking of the rotary hinge mechanism 100 are achieved, the hinge is prevented from being excessively opened, the use reliability of the hinge mechanism is ensured, and the user experience is improved.

[0073] Referring to Figure 1 and Figure 11 To solve the above problems, another aspect of the present application provides a vehicle-mounted ceiling screen, which comprises a screen base 7, a display screen 8, a rotary hinge mechanism 100 as described above, and a screen locking mechanism 9. The screen base 7 comprises a base fixing plate 71 fixed to the ceiling (not shown in the figure) of a vehicle and a decorative inner plate 72, which are buckled together. The display screen 8 is rotatably connected to the screen base 7 through the rotary hinge mechanism 100 arranged at the hinge mounting position 73. The screen locking mechanism 9 is fixed to the middle part of the side of the screen base 7 away from the rotary hinge mechanism 100. The seat body 1 is fixedly connected to the screen base 7, the circular rotating shaft 2 is fixedly connected to the display screen 8 through the mounting plate 101 fixed to the end thereof, and the screen locking mechanism 9 is closed by clamping the display screen 8 to the screen base 7 from the side away from the rotary hinge mechanism 100.

[0074] In use, after the user unlocks the screen locking mechanism 9, the display screen 8 can be manually flipped. In this process, the display screen 8 drives the circular rotating shaft 2 to rotate around the axis 10 compared to the damping member 3, and generates a multi-stage and gradient changing rotary torque under the action of each damping shaft section 21 and the corresponding shaft sleeve 31, which significantly improves the damping texture in the manual opening process of the ceiling screen, brings better user experience, and reduces the production cost of the ceiling screen, which is beneficial to popularization and use in vehicles of all levels.

[0075] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the contents of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A rotary hinge mechanism, characterized by, The rotary hinge mechanism comprises a seat body (1) provided with a damping member (3), the damping member (3) comprises at least one shaft sleeve (31), each shaft sleeve (31) comprises a through hole, the inner wall of the through hole is provided with a flattening surface (311); a circular rotating shaft (2) comprises at least one damping shaft segment (21), the circumferential surface of each damping shaft segment (21) is provided with a rotating shaft surface (211); wherein, the damping shaft segment (21) is rotatably arranged in the corresponding through hole, and the damping shaft segment (21) is rotated to slide against the flattening surface (311) and generate a rotary torque; the circular rotating shaft (2) comprises N damping shaft segments (21), wherein N is greater than or equal to 2, the damping shaft segments (21) are sequentially and spacedly arranged along the axis of the circular rotating shaft (2); the rotating shaft surfaces (211) of the damping shaft segments (21) are alternately arranged; the number of the shaft sleeves (31) is the same as that of the damping shaft segments (21), and each shaft sleeve (31) wraps a corresponding damping shaft segment (21); along the axis direction of the circular rotating shaft (2), the rotating shaft surfaces (211) of the damping shaft segments (21) are spirally arranged around the axis of the circular rotating shaft (2). along the axis direction of the circular rotating shaft (2), the inclination angle of the rotating shaft surfaces (211) of the damping shaft segments (21) with respect to the reference surface gradually increases or decreases. along the axis direction of the circular rotating shaft (2), the area of the rotating shaft surfaces (211) of the damping shaft segments (21) gradually increases or decreases.

2. The rotary hinge mechanism of claim 1, wherein, the rotary hinge mechanism further comprises a locking feel pad (4); 3. The rotary hinge mechanism of claim 1, wherein, the locking feel pad (4) is fixed on the circular rotating shaft (2); 4. The rotary hinge mechanism of claim 1, wherein, the outer wall of the locking feel pad (4) is provided with a positioning groove (41); the seat body (1) is further provided with a limiting assembly, the limiting assembly is elastically abutted against the outer wall of the locking feel pad (4) and can be buckled in the positioning groove (41) when the locking feel pad (4) is rotated to a preset angle.

5. The rotary hinge mechanism according to claim 4, wherein the limiting assembly comprises an elastic member (52) and a positioning bump bead (53) connected with the elastic member (52), wherein the elastic member automatically drives the positioning bump bead (53) to elastically abut against the outer wall of the locking feel pad (4); the positioning bump bead (53) is slid into the positioning groove (41) when the locking feel pad (4) is rotated to a preset angle along with the circular rotating shaft (2). the limiting assembly comprises a limiting spring piece (6); the limiting spring piece (6) comprises a fixed part (61) and an elastic abutting part (62) formed by bending and extending from the fixed part (61), wherein the fixed part (61) is fixedly connected with the seat body (1), and the elastic abutting part (62) elastically abuts against the outer wall of the locking feel pad (4).

6. The rotary hinge mechanism of claim 4, wherein, ​ ​ The elastic abutting part (62) slides into the positioning groove (41) when the locking feeler (4) rotates to a preset angle with the circular rotating shaft (2).

7. The rotary hinge mechanism according to claim 1, wherein, The end of the circular rotating shaft (2) connected with the seat body (1) is provided with a limiting boss (23); The seat body (1) is provided with a stop boss (13); When the circular rotating shaft (2) rotates to a preset angle, the limiting boss (23) abuts against the stop boss (13) to prevent the circular rotating shaft (2) from continuing to rotate.

8. A vehicle roof-mounted screen provided on a roof of a vehicle, characterized by comprising: The ceiling-mounted screen comprises: A screen base (7) fixed on the ceiling; A display screen (8); A rotary hinge mechanism, the display screen (8) is rotatably connected to the screen base (7) through the rotary hinge mechanism, and the rotary hinge mechanism is any one of the rotary hinge mechanisms according to claims 1-7; wherein, The seat body (1) is fixedly connected with one of the screen base (7) and the display screen (8), and the circular rotating shaft (2) is fixedly connected with the other one of the screen base (7) and the display screen (8).

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