A two-side foldable vehicle-mounted projection screen structure

Abstract

This invention discloses a foldable vehicle projection screen structure, comprising a screen assembly and folding track assemblies symmetrically arranged on the left and right sides of the screen assembly. The screen assembly includes a screen mounting portion, a screen body wound around the screen mounting portion, and a first driving component for driving the screen body to unfold and retract. The folding track assembly includes a fixed baffle fixed to the B-pillar of the vehicle body, a middle baffle hinged to the fixed baffle, and an outer baffle coaxially hinged to the middle baffle. A second driving component is provided on the fixed baffle, capable of driving the middle baffle and the outer baffle to an unfolded or retracted position. A guide rail component is provided on the outer baffle. This invention exhibits good stability when adjusted to the unfolded and retracted positions, and when viewing the film after adjustment. Furthermore, it does not occupy vehicle space when retracted, thus facilitating use within a vehicle.

Description

Technical Field

[0001] This invention relates to the field of vehicle projection system technology, and in particular to a vehicle-mounted projection screen structure that can be folded on both sides. Background Technology

[0002] Vehicle passenger compartments typically feature front and rear seats. Currently, to meet the entertainment needs of rear passengers, some vehicles are equipped with in-vehicle projection systems. These systems use a retractable projection screen mounted on the vehicle's ceiling. When unfolded, the screen is positioned between the front and rear seats for rear-seat viewing. However, when unfolded, gaps exist between the screen's two vertical edges and the vehicle's side walls. Existing technology generally employs a fixed track mechanism, using rigidly installed tracks to smoothly raise and lower the screen and conceal the gaps between the screen and the vehicle's sides. This rigid installation of existing fixed tracks can easily cause the screen to protrude into the front passenger space, encroaching on the rearward adjustment space of the front seats, especially the front passenger seat. This restricts seatback folding, fore-and-aft movement, and, in higher-end models, seat rotation, reducing in-vehicle comfort and spatial flexibility. Furthermore, the lack of effective support and guidance on both sides of existing suspended screens makes them prone to significant shaking due to vehicle vibration and tilting during driving, resulting in unstable projected images and severely impacting the user experience. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings mentioned above by providing a vehicle-mounted projection screen structure that can be folded on both sides, achieving good stability during adjustment and viewing, and not taking up vehicle space when retracted.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a vehicle-mounted projection screen structure that can be folded on both sides, comprising: A curtain assembly and folding track assemblies symmetrically arranged on the left and right sides of the curtain assembly; The curtain assembly includes a curtain mounting part, a curtain body wound on the curtain mounting part, and a first driving component for driving the curtain body to unfold and retract. The folding track assembly includes a fixed baffle fixed to the B-pillar of the vehicle body, a middle baffle hinged to the fixed baffle, and an outer baffle hinged to the middle baffle. The fixed baffle is provided with a second driving component, which can drive the middle baffle and the outer baffle to move to an unfolded or retracted posture. The outer baffle is provided with a guide rail component, which can be perpendicularly engaged with the curtain assembly when the middle baffle and the outer baffle are rotated to the unfolded position, and can guide the curtain body to rise and fall smoothly in this state.

[0005] Furthermore, the curtain mounting part includes a curtain support frame and a curtain mounting frame; The curtain mounting frame is rotatably provided with a roller, the curtain body is wound around the roller, the curtain support frame is covered on the curtain body, and both ends of the roller are coaxially provided with winding wheels. The first driving component is located on one of the winding wheels on the side away from the roller. The first driving component includes a first geared motor mounted on the curtain support frame. The moving end of the first geared motor is connected to the corresponding winding wheel, and a coupling is provided between the winding wheel and the roller. A pulley group is also provided at the bottom of the curtain support frame.

[0006] Furthermore, the guide rail component includes a curtain guide rail vertically arranged on the outer baffle, and a movable pulley is rotatably provided on the lower side of the curtain guide rail; The curtain assembly also includes a drive rope wound on the winding wheel, a pull rod is provided on the side of the curtain body away from the roller, a sliding sleeve is inserted in the pull rod, a hinge joint is hinged on one side of the sliding sleeve, and the hinge joint is slidably disposed on the curtain guide rail. The transmission rope passes through a pulley block and a movable pulley on the side away from the winding wheel and is connected to a hinged joint.

[0007] Furthermore, the transmission rope is a steel wire rope.

[0008] Furthermore, a tension spring is provided on the pull rod, and the end of the tension spring away from the pull rod is connected to the winding wheel.

[0009] Furthermore, a mounting bracket is provided on the fixed baffle, and the second driving component is mounted thereon; The second driving component includes a second geared motor mounted on the mounting bracket. Both the second geared motor and the mounting bracket are provided with a first connecting rod that can be swung and adjusted. A movable guide rail is vertically provided on the middle baffle. A second connecting rod is hinged to the side of each first connecting rod away from the connection between the corresponding second geared motor and the mounting bracket. A slider hinge is provided between each first connecting rod and the second connecting rod, and the slider hinge is slidably mounted on the movable guide rail. The end of each second link away from the corresponding first link is hinged to the curtain guide rail.

[0010] Furthermore, when the middle baffle and the outer baffle are in the unfolded position, the first connecting rod and the second connecting rod are both perpendicularly engaged with the movable guide rail.

[0011] The beneficial effects of this invention are reflected in: In this invention, when projection is required, the second drive component must first be activated to unfold the middle and outer baffles step by step. When fully unfolded, the guide rail component on the outer baffle is perpendicular to the screen assembly in its rolled-up state. Subsequently, the first drive component is controlled to operate, at which point the screen body rolls downwards. The screen body is guided by the guide rail components on both sides, ensuring that it is very stable and does not shift or tilt during unfolding. After unfolding, the guide rail components can prevent the screen body from shaking and affecting the projection effect, thus facilitating practical use. In addition, after use, it can be retracted by reversing the above operation. The step-by-step retraction of the middle and outer baffles frees up the adjustment space of the front seats in the vehicle, thus avoiding the problem of space encroachment. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the unfolded posture of the present invention; Figure 2 This is a schematic diagram of the contraction posture of the present invention; Figure 3 This is a first partial schematic diagram of the present invention; Figure 4 This is a second partial schematic diagram of the present invention; Figure 5 This is a schematic diagram of a third part of the present invention; Figure 6 In this invention Figure 3 A magnified view of a portion of A shown; Figure 7 In this invention Figure 3 A magnified view of part B shown.

[0013] In the picture: 1. Curtain assembly; 101. Curtain body; 102. Curtain support frame; 103. Curtain mounting frame; 104. Roller; 105. Winding wheel; 106. First geared motor; 107. Pulley block; 108. Drive rope; 109. Pull rod; 110. Sliding sleeve; 111. Hinge joint; 2. B-pillar; 3. Fixed baffle; 4. Middle baffle; 5. Outer baffle; 6. Guide rail assembly; 601. Curtain guide rail; 602. Movable pulley; 7. Mounting bracket; 8. Second drive assembly; 801. Second geared motor; 802. First connecting rod; 803. Movable guide rail; 804. Second connecting rod. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figure 1-7 This invention discloses a vehicle-mounted projection screen structure that can be folded on both sides, including a screen assembly 1 and folding track assemblies symmetrically arranged on the left and right sides of the screen assembly 1. The screen assembly 1 includes a screen mounting part, a screen body 101 wound around the screen mounting part, and a first driving component for driving the screen body 101 to unfold and retract. In use, the screen body 101 can be adjusted accordingly by the first driving component so that the vehicle occupants can perform corresponding projections or retraction.

[0016] In one embodiment, the folding track assembly includes a fixed baffle 3 fixed to the B-pillar 2 of the vehicle body, a middle baffle 4 hinged to the fixed baffle 3, and an outer baffle 5 coaxially hinged to the middle baffle 4. The fixed baffle 3 is provided with a second driving component 8, which can drive the middle baffle 4 and the outer baffle 5 to move to an unfolded or retracted posture. The outer baffle 5 is provided with a guide rail component 6, which can be perpendicularly engaged with the curtain assembly 1 when the middle baffle 4 and the outer baffle 5 are rotated to the unfolded posture, and can guide the curtain body 101 to rise and fall smoothly in this state.

[0017] In practical implementation, when projection is required, the second drive component 8 must be activated first, causing the middle baffle 4 and the outer baffle 5 to unfold step by step. When fully unfolded, the guide rail component 6 on the outer baffle 5 is perpendicular to the screen assembly 1 in the rolled-up state. Then, the first drive component is controlled to work, at which time the screen body 101 rolls down. The screen body 101 is guided by the guide rail components 6 on both sides, thus ensuring that it is very stable and does not deviate or tilt when unfolded. After unfolding, the guide rail component 6 can prevent the screen body 101 from shaking and affecting the projection effect, thus facilitating practical use. In addition, after use, it can be retracted by reversing the above operation. The step-by-step retraction of the middle baffle 4 and the outer baffle 5 can free up the adjustment space of the front seats of the vehicle, so there is no problem of space encroachment.

[0018] In one embodiment, the curtain mounting part includes a curtain support frame 102 and a curtain mounting frame 103. A roller 104 is rotatably mounted on the curtain mounting frame 103. The curtain body 101 is wound around the roller 104. The curtain support frame 102 covers the curtain body 101 and does not interfere with the curtain body 101 during the winding and unwinding movement. Both ends of the roller 104 are coaxially provided with winding wheels 105. A first driving component is provided on one side of one of the winding wheels 105 away from the roller 104.

[0019] Meanwhile, the first driving component includes a first geared motor 106 mounted on the curtain support frame 102. The moving end of the first geared motor 106 is connected to a corresponding winding wheel 105, and a coupling (not shown in the figure) is installed between the winding wheel 105 and the roller 104. A pulley block 107 is also rotatably mounted on the bottom of the curtain support frame 102.

[0020] The guide rail component 6 includes a vertically mounted curtain guide rail 601 on the outer baffle 5. A movable pulley 602 is rotatably mounted on the lower side of the curtain guide rail 601. The curtain assembly 1 also includes a transmission rope 108 wound on a winding wheel 105. A pull rod 109 is provided on the side of the curtain body 101 away from the roller 104. A sliding sleeve 110 is inserted into the pull rod 109. A hinge joint 111 is hinged on one side of the sliding sleeve 110. The hinge joint 111 is slidably mounted on the curtain guide rail 601. The side of the transmission rope 108 away from the winding wheel 105 passes through the pulley group 107 and the movable pulley 602 and is connected to the hinge joint 111.

[0021] In practice, the first reduction motor 106 drives the winding wheel 105 to rotate synchronously in opposite directions with the roller 104. Through the pull rod 109 of the transmission rope 108, it moves along the setting direction of the screen guide rail 601 and completes the lifting and lowering of the screen body 101. When the middle baffle 4 and the outer baffle 5 are in the retracted posture, the hinge joint 111 and the sliding sleeve 110 adapt to each other. The transmission rope 108 only forms rolling transmission with the pulley group 107 and the moving pulley 602. This working mode relies on the guidance of the screen guide rail 601 to achieve smooth lifting and lowering of the screen without shaking. The rolling transmission reduces operating noise and wear. After the middle baffle 4 and the outer baffle 5 are folded up, the guide rail component 6 can move synchronously with them, thus freeing up the front row seating space. At the same time, the transmission rope 108 is kept taut to prevent the screen body 101 from drooping and wrinkling, thus comprehensively improving the stability of the vehicle projection and the flexibility of the interior space.

[0022] In one embodiment, the transmission rope 108 is a steel wire rope.

[0023] This design, combined with the corresponding working mode, enables the transmission structure to be stronger and the tensile deformation to be smaller. It can maintain a taut state for a long time to prevent the curtain body 101 from sagging and loosening. At the same time, the surface of the steel wire rope is smooth and wear-resistant, and the friction is lower and the operating noise is lower when it rolls in contact with the pulley block 107 and the moving pulley 602. It also has a longer service life and does not require rigid track constraints, further saving installation space and reducing the overall structural cost.

[0024] In one embodiment, a tension spring (not shown in the figure) is provided on the pull rod 109, and the end of the tension spring away from the pull rod 109 is connected to the winding wheel 105.

[0025] In practice, when the screen body 101 is in motion, the tension spring continuously applies pre-tension to the transmission rope 108, so that the transmission rope 108 remains taut during the retraction and extension of the screen guide rail 601. This structure can eliminate transmission gaps, prevent the screen body 101 from sagging, wrinkling and shaking due to its own weight or vehicle bumps, ensure that the projected image is always flat and stable, and improve the consistency of movement and reliability of the mechanism when the screen is raised and lowered.

[0026] In one embodiment, a mounting bracket 7 is installed on the fixed baffle 3, and a second driving component 8 is disposed thereon. The second driving component 8 includes a second geared motor 801 mounted on the mounting bracket 7. Both the second geared motor 801 and the mounting bracket 7 are equipped with first connecting rods 802 that can be adjusted by swinging. A movable guide rail 803 is vertically mounted on the middle baffle 4. A second connecting rod 804 is hinged to the side of each first connecting rod 802 away from the connection between the corresponding second geared motor 801 and the mounting bracket 7. A slider hinge is provided between each first connecting rod 802 and the second connecting rod 804. The slider hinge is slidably disposed on the movable guide rail 803. The end of each second connecting rod 804 away from the corresponding first connecting rod 802 is hinged to the curtain guide rail 601.

[0027] In practice, by controlling the second reduction motor 801 to work, the second reduction motor 801 drives the corresponding first link 802 to swing. At this time, the slider hinge slides along the movable guide rail 803 and drives the second link 804 to move, thereby pushing the middle baffle 4, the outer baffle 5 and the curtain guide rail 601 to complete the unfolding or folding action simultaneously. This transmission mode can realize the smooth switching of the track posture, the self-locking and stability in the unfolded state, and the reliable retraction after folding to release the front space of the vehicle, while improving the rigidity of the mechanism and the vibration resistance during driving.

[0028] In one embodiment, when the middle baffle 4 and the outer baffle 5 are in the unfolded position, the first link 802 and the second link 804 are both perpendicularly engaged with the movable guide rail 803.

[0029] This design, with its vertically cooperating structure, ensures that when the middle baffle 4 and the outer baffle 5 are in the unfolded position, the corresponding linkage mechanism is in the self-locking dead point position, preventing external forces from pushing the linkage and baffle to deflect. This cooperation method can effectively improve the structural rigidity and stability in the unfolded state, avoid loosening, displacement and abnormal noise caused by vibration during vehicle operation, and ensure that the screen guide rail 601 always maintains a vertical guiding state, thus ensuring the reliable operation of the projection screen.

[0030] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0032] Additionally, "multiple" refers to two or more.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle-mounted projection screen structure that can be folded on both sides, characterized in that, include: A curtain assembly (1) and folding track assemblies symmetrically arranged on the left and right sides of the curtain assembly (1); The curtain assembly (1) includes a curtain mounting part, a curtain body (101) wound around the curtain mounting part, and a first driving component for driving the curtain body (101) to unfold and retract. The folding track assembly includes a fixed baffle (3) fixed to the B-pillar (2) of the vehicle body, a middle baffle (4) hinged to the fixed baffle (3), and an outer baffle (5) coaxially hinged to the middle baffle (4). The fixed baffle (3) is provided with a second driving component (8), which can drive the middle baffle (4) and the outer baffle (5) to move to an unfolded or retracted posture. The outer baffle (5) is provided with a guide rail component (6). The guide rail component (6) can be vertically engaged with the curtain assembly (1) when the middle baffle (4) and the outer baffle (5) are rotated to the unfolded position, and in this state, it can guide the curtain body (101) to rise and fall smoothly.

2. The foldable vehicle-mounted projection screen structure according to claim 1, characterized in that: The curtain mounting section includes a curtain support frame (102) and a curtain mounting frame (103). A roller (104) is rotatably mounted on the curtain mounting bracket (103). The curtain body (101) is wound around the roller (104). The curtain support frame (102) covers the curtain body (101). Both ends of the roller (104) are coaxially provided with winding wheels (105). The first driving component is located on one side of one of the winding wheels (105) away from the roller (104). The first driving component includes a first geared motor (106) mounted on the curtain support frame (102). The moving end of the first geared motor (106) is connected to the corresponding winding wheel (105), and a coupling is provided between the winding wheel (105) and the roller (104). A pulley group (107) is also provided at the bottom of the curtain support frame (102).

3. The foldable vehicle-mounted projection screen structure according to claim 2, characterized in that: The guide rail component (6) includes a curtain guide rail (601) vertically arranged on the outer baffle (5), and a movable pulley (602) is rotatably arranged on the lower side of the curtain guide rail (601). The curtain assembly (1) also includes a transmission rope (108) wound on the winding wheel (105). A pull rod (109) is provided on the side of the curtain body (101) away from the roller (104). A sliding sleeve (110) is inserted into the pull rod (109). A hinge joint (111) is hinged on one side of the sliding sleeve (110). The hinge joint (111) is slidably disposed on the curtain guide rail (601). The transmission rope (108) passes through the pulley block (107) and the movable pulley (602) on the side away from the winding wheel (105) and is connected to the hinge joint (111).

4. The foldable vehicle-mounted projection screen structure according to claim 3, characterized in that: The transmission rope (108) is a steel wire rope.

5. The foldable vehicle-mounted projection screen structure according to claim 3, characterized in that: A tension spring is provided on the pull rod (109), and the end of the tension spring away from the pull rod (109) is connected to the winding wheel (105).

6. The foldable vehicle-mounted projection screen structure according to claim 1, characterized in that: The fixed baffle (3) is provided with a mounting bracket (7), and the second driving component (8) is disposed on it; The second driving component (8) includes a second geared motor (801) mounted on the mounting bracket (7). Both the second geared motor (801) and the mounting bracket (7) are provided with a first connecting rod (802) that can be swung and adjusted. A movable guide rail (803) is vertically provided on the middle baffle (4). A second connecting rod (804) is hinged to the side of each first connecting rod (802) away from the connection between the corresponding second geared motor (801) and the mounting bracket (7). A slider hinge is provided between each first connecting rod (802) and the second connecting rod (804). The slider hinge is slidably mounted on the movable guide rail (803). The end of each second link (804) away from the corresponding first link (802) is hinged to the curtain guide rail (601).

7. The foldable vehicle-mounted projection screen structure according to claim 6, characterized in that: When the middle baffle (4) and the outer baffle (5) are in the unfolded posture, the first connecting rod (802) and the second connecting rod (804) are both perpendicularly engaged with the movable guide rail (803).

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