A driven mechanism for vehicle-mounted electric flip ceiling screen

Abstract

The present invention discloses a driven mechanism for a vehicle-mounted electric flip ceiling screen, comprising a driven end housing, a driven end connecting shaft and a driven end connecting bracket, wherein the rear half of the driven end connecting shaft is rotatably arranged in the front end of the driven end housing through a shaft sleeve, and the driven end connecting bracket is sleeved on the front half of the driven end connecting shaft; a circle of spherical flanges protruding radially outward is arranged on the outer surface of the rear half of the driven end connecting shaft, and a circle of first grooves adapted to the spherical flanges are arranged on the inner surface of the shaft sleeve, and a ball joint connection between the driven end connecting shaft and the shaft sleeve is realized through the cooperation between the spherical flange and the first groove. The present invention effectively improves the activity space of the driven end connecting shaft, thereby effectively offsetting the problem of the driven mechanism and the active mechanism being out of axial alignment due to assembly errors during the installation of the driven mechanism and the active mechanism; and realizes the reading feedback of the screen flip angle, thereby realizing the precise control of the screen flip angle.

Description

Technical Field

[0001] The invention belongs to the technical field of flip ceiling screens, and in particular relates to a driven mechanism for a vehicle-mounted electric flip ceiling screen. Background Art

[0002] With the development of society and the improvement of people's quality of life, cars have become an essential means of transportation for people to travel. In order to better meet the needs of users, some electronic ceiling screens for entertainment, study, and work are often added to the car. In order to save space in the car and protect the screen, the screen usually chooses a hidden design. By setting a flip structure or a folding structure on the screen, a hidden effect is achieved, and the screen can be unfolded as needed.

[0003] In the flipping structure, in order to realize automatic flipping, a group of active mechanisms and a group of driven mechanisms are usually arranged at both ends of the screen respectively. When flipping, the automatic flipping of the screen is realized by the drive of the active mechanism and the assistance of the driven mechanism. At present, in the design of the driven mechanism, a bearing is often arranged inside it to realize the driven effect. However, since the installation of the bearing generally adopts a transition fit to ensure that the inner and outer rings of the bearing maintain a certain bonding strength with the rotating body and the fixed body to prevent sliding, which affects the service life of the bearing and the normal operation of the installation mechanism; this results in a small space for the rotating body of the driven mechanism itself to move, and the screen will inevitably have assembly errors in the process of installing the driven mechanism and the active mechanism, resulting in an unsolvable problem of different axes between the driven mechanism and the active mechanism, which seriously affects the flipping of the screen. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention aims to provide a driven mechanism for a vehicle-mounted electric flip ceiling screen to solve the problem of being out of coaxiality with the active mechanism after being installed on the screen.

[0005] In order to achieve the above technical objectives and effects, the present invention is implemented through the following technical solutions:

[0006] A driven mechanism for a vehicle-mounted electric flip ceiling screen comprises a driven end housing, a driven end connecting shaft and a driven end connecting bracket, wherein the rear half of the driven end connecting shaft is rotatably arranged in the front end of the driven end housing through a shaft sleeve, and the driven end connecting bracket is sleeved on the front half of the driven end connecting shaft; a circle of spherical flanges protruding radially outward is arranged on the outer surface of the rear half of the driven end connecting shaft, and a circle of first grooves adapted to the spherical flanges are arranged on the inner surface of the shaft sleeve, and a ball joint connection between the driven end connecting shaft and the shaft sleeve is achieved through the cooperation between the spherical flange and the first groove.

[0007] Furthermore, a Hall sensor is included, and the Hall sensor is arranged in the driven end housing.

[0008] Furthermore, a first gear and a second gear meshing with the first gear are arranged between the Hall sensor and the driven end connecting shaft; the first gear is arranged on the driven end connecting shaft, and the two rotate synchronously; the second gear is rotatably arranged on the driven end housing through a pin shaft.

[0009] Furthermore, the first gear and the second gear rotate at the same angular speed.

[0010] Furthermore, a limiting plate for limiting the second gear is provided between the Hall sensor and the driven end connecting shaft, and the limiting plate is fixed in the driven end housing.

[0011] Furthermore, the rear end cover of the driven end housing is connected with a rear cover, and a limiting column is arranged on the rear cover.

[0012] Furthermore, a plurality of evenly distributed ridges are radially arranged on the outer surface of the sleeve, and the ridges extend axially along the sleeve; a second groove adapted to the ridges is arranged in the driven end housing, and the sleeve is prevented from rotating in the driven end housing through the cooperation between the ridges and the second grooves.

[0013] Furthermore, the driven end connecting shaft is a stepped shaft, and the outer diameter of the rear half is smaller than the outer diameter of the front half.

[0014] Furthermore, a positioning plane is provided at the front end of the front half of the driven end connecting shaft, and a mating plane adapted to the positioning plane is provided in the driven end connecting bracket which is sleeved on the front half of the driven end connecting shaft. Through the cooperation between the positioning plane and the mating plane, the driven end connecting bracket can rotate synchronously with the driven end connecting shaft.

[0015] Furthermore, the driven end housing is provided with a plurality of groups of mounting holes for fixing the driven end housing, and shock-absorbing gaskets are provided in the mounting holes.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The driven end connecting shaft of the driven mechanism of the present invention adopts a ball joint connection method, which effectively increases the activity space of the driven end connecting shaft, thereby effectively offsetting the problem of the driven mechanism and the active mechanism not being in axial alignment due to assembly errors during the installation process of the driven mechanism and the active mechanism;

[0018] 2. The driven mechanism of the present invention is provided with a Hall sensor, so that after the driven mechanism is installed on the screen, the reading feedback of the screen flip angle can be realized, thereby realizing accurate control of the screen flip angle.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the driven mechanism of the present invention;

[0022] Figure 2 It is a top view of the driven mechanism of the present invention;

[0023] Figure 3 For the present invention Figure 2 Sectional view at AA;

[0024] Figure 4 It is an exploded view of the driven mechanism of the present invention;

[0025] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle;

[0026] Figure 6 It is a schematic diagram of the structure of the driven end housing of the present invention;

[0027] Figure 7 This is a schematic diagram of the connection structure of the driven end of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the driven end connecting bracket of the present invention;

[0029] Fig. 9 This is a schematic diagram of the shaft sleeve structure of the present invention;

[0030] Fig.10 The figure is a schematic diagram of an application embodiment of the present invention.

[0031] Explanation of the numbers in the figure: 1. Driven end housing; 2. Driven end connecting shaft; 3. Driven end connecting bracket; 4. Bushing; 5. Hall sensor; 6. First gear; 7. Second gear; 8. Pin; 9. Limit plate; 10. Back cover; 11. Limit column; 12. Shock-absorbing gasket; 101. Second groove; 102. Mounting hole; 201. Spherical flange; 202. Positioning plane; 301. Matching plane; 402. Raised ridge. DETAILED DESCRIPTION

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] See also Figure 1-9 As shown, a driven mechanism for a vehicle-mounted electric flip ceiling screen comprises a driven end housing 1, a driven end connecting shaft 2 and a driven end connecting bracket 3, wherein the rear half of the driven end connecting shaft 2 is rotatably arranged in the front end of the driven end housing 1 through a shaft sleeve 4, and the driven end connecting bracket 3 is sleeved on the front half of the driven end connecting shaft 2; a circle of spherical flanges 201 protruding radially outward is arranged on the outer surface of the rear half of the driven end connecting shaft 2, and a circle of first grooves 401 matched with the spherical flanges 201 are arranged on the inner surface of the shaft sleeve 4, and a ball joint connection between the driven end connecting shaft 2 and the shaft sleeve 4 is realized through the cooperation between the spherical flange 201 and the first groove 401, thereby effectively improving the activity space of the driven end connecting shaft.

[0035] For further information, see Figure 5 As shown, a Hall sensor 5 capable of reading the feedback rotation angle is also included, and the Hall sensor 5 is arranged in the driven end housing 1.

[0036] For further information, see Figure 5As shown, a first gear 6 and a second gear 7 meshingly connected with the first gear 6 are provided between the Hall sensor 5 and the driven end connecting shaft 2; the first gear 6 is provided on the driven end connecting shaft 2, and the two rotate synchronously; the second gear 7 is rotatably provided on the driven end housing 1 through a pin shaft 8; wherein, when rotating, the first gear 6 and the second gear 7 rotate at the same angular velocity; and in order to prevent the second gear 7 from being displaced and falling off along the axial direction of the pin shaft 8 during the rotation process, a limiting plate 9 for limiting the second gear 7 is also provided, and the limiting plate 9 is detachably fixed in the driven end housing 1 through a corresponding locking screw; and in this embodiment, the Hall sensor 5 is used to read and feedback the rotation angle of the second gear 7, and since the first gear 6 and the second gear 7 rotate at the same angular velocity and the first gear 6 rotates synchronously with the driven end connecting shaft 2, the rotation angle read and fed back by the Hall sensor 5 is the same as the rotation angle of the first gear 6 and the driven end connecting shaft 2.

[0037] For further information, see Figure 1-4 As shown, the rear end cover of the driven end housing 1 is closed with a rear cover 10, and in the present embodiment, the rear cover 10 is locked and fixed to the driven end housing 1 by corresponding locking screws; a limiting column 11 is arranged on the rear cover 10, and the main function of the limiting column 11 is to support the limiting plate 9 when the rear cover 10 is closed.

[0038] For further information, see Figure 6 and Fig. 9 As shown, a plurality of evenly distributed ridges 402 are radially arranged on the outer surface of the sleeve 4, and the ridges 402 extend axially along the sleeve 4. In the present embodiment, the ridges 402 extend to the front and rear end surfaces of the sleeve 4. A second groove 101 adapted to the ridge 402 is arranged in the driven end housing 1, and the sleeve 4 is prevented from rotating in the driven end housing 1 through the cooperation between the ridge 402 and the second groove 101.

[0039] Further, in this embodiment, see Figure 7-8As shown, the driven end connecting shaft 2 is a stepped shaft, and the outer diameter of its rear half is smaller than that of the front half; the front end of the front half of the driven end connecting shaft 2 is provided with two groups of positioning planes 202, and the two groups of positioning planes 202 are symmetrically distributed on the front half of the driven end connecting shaft 2, and the driven end connecting bracket 3 sleeved on the front half of the driven end connecting shaft 2 is provided with a matching plane 301 adapted to the positioning plane 202, and the driven end connecting bracket 3 is realized to rotate synchronously with the driven end connecting shaft 2 through the matching between the positioning plane 202 and the matching plane 301; therefore, the rotation angle read and fed back by the Hall sensor 5 is also the rotation angle of the driven end connecting bracket 3.

[0040] For further information, see Figure 1-4 and Figure 6 As shown, the driven end housing 1 is provided with a plurality of groups of mounting holes 102 for fixing the driven end housing 1. In the present embodiment, a total of 4 mounting holes 102 are provided. Shock-absorbing gaskets 12 are provided in each of the mounting holes 102. The shock-absorbing gaskets 12 are made of rubber.

[0041] The working principle of the present invention is as follows:

[0042] Before use, see Fig.10 As shown, an implementation mode of the driven mechanism (label A in the figure represents the driven mechanism, label B in the figure represents the active mechanism, and label C in the figure represents the screen), first, the driven mechanism is installed at both ends of the screen opposite to the active mechanism through the driven end connecting bracket 3; then the driven mechanism and the active mechanism are fixed, wherein the driven mechanism is fixed through its own mounting hole 102; here, it should be noted that due to the ball joint connection between the driven end connecting shaft 2 and the sleeve 4 in the driven mechanism, the movable space of the driven end connecting shaft 2 is effectively improved, thereby effectively offsetting the problem of the driven mechanism and the active mechanism not being in the same axis due to assembly errors during the installation process.

[0043] When the screen needs to be flipped, the active mechanism is started, and the screen is driven by the active mechanism to rotate between the driven mechanism and the active mechanism to achieve screen flipping.

[0044] During the screen flipping process, since the driven end connection bracket 3 in the driven mechanism is fixedly connected to the screen, the driven end connection bracket 3 flips synchronously with the screen, and the rotation angle read and fed back by the Hall sensor 5 is also the flipping angle of the screen, thereby achieving precise control of the screen flipping angle.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A driven mechanism for a vehicle-mounted electric flip ceiling screen, characterized in that: The invention comprises a driven end housing (1), a driven end connecting shaft (2) and a driven end connecting bracket (3); the rear half of the driven end connecting shaft (2) is rotatably arranged in the front end of the driven end housing (1) through a shaft sleeve (4); the driven end connecting bracket (3) is sleeved on the front half of the driven end connecting shaft (2); a circle of spherical flanges (201) protruding radially outward is arranged on the outer surface of the rear half of the driven end connecting shaft (2); a circle of first grooves (401) adapted to the spherical flanges (201) are arranged on the inner surface of the shaft sleeve (4); and a ball joint connection between the driven end connecting shaft (2) and the shaft sleeve (4) is achieved through the cooperation between the spherical flanges (201) and the first grooves (401).

2. The driven mechanism for the vehicle-mounted electric flip ceiling screen according to claim 1 is characterized in that: It also includes a Hall sensor (5), which is arranged in the driven end housing (1).

3. The driven mechanism for the vehicle-mounted electric flip ceiling screen according to claim 2 is characterized in that: A first gear (6) and a second gear (7) meshingly connected to the first gear (6) are arranged between the Hall sensor (5) and the driven end connecting shaft (2); the first gear (6) is arranged on the driven end connecting shaft (2), and the two rotate synchronously; the second gear (7) is rotatably arranged on the driven end housing (1) via a pin shaft (8).

4. The driven mechanism for the vehicle-mounted electric flip ceiling screen according to claim 3 is characterized in that: The first gear (6) and the second gear (7) rotate at the same angular speed.

5. The driven mechanism for the vehicle-mounted electric flip ceiling screen according to claim 4 is characterized in that: A limiting plate (9) for limiting the position of the second gear (7) is also provided between the Hall sensor (5) and the driven end connecting shaft (2); the limiting plate (9) is fixed in the driven end housing (1).

6. The driven mechanism for the vehicle-mounted electric flip ceiling screen according to claim 5 is characterized in that: The rear end cover of the driven end housing (1) is connected to a rear cover (10), and a limiting column (11) is arranged on the rear cover (10).

7. The driven mechanism for the vehicle-mounted electric flip ceiling screen according to claim 1 is characterized in that: A plurality of evenly distributed ridges (402) are radially arranged on the outer surface of the shaft sleeve (4), and the ridges (402) extend axially along the shaft sleeve (4); a second groove (101) adapted to the ridges (402) is arranged in the driven end housing (1), and the shaft sleeve (4) is prevented from rotating in the driven end housing (1) through the cooperation between the ridges (402) and the second grooves (101).

8. The driven mechanism for the vehicle-mounted electric flip ceiling screen according to claim 1 is characterized in that: The driven end connecting shaft (2) is a stepped shaft, the outer diameter of the rear half of which is smaller than the outer diameter of the front half.

9. The driven mechanism for the vehicle-mounted electric flip ceiling screen according to claim 8 is characterized in that: A positioning plane (202) is provided at the front end of the front half of the driven end connecting shaft (2), and a matching plane (301) adapted to the positioning plane (202) is provided in the driven end connecting bracket (3) sleeved on the front half of the driven end connecting shaft (2). Through the matching between the positioning plane (202) and the matching plane (301), the driven end connecting bracket (3) can rotate synchronously with the driven end connecting shaft (2).

10. The driven mechanism for the vehicle-mounted electric flip ceiling screen according to claim 1, characterized in that: The driven end housing (1) is provided with a plurality of groups of mounting holes (102) for fixing the driven end housing, and shock-absorbing gaskets (12) are provided in the mounting holes (102).

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