Projection screen and vehicle

Abstract

The utility model relates to a projection screen and a vehicle, and belongs to the technical field of projection screens, and the projection screen comprises a base and a top cover which are oppositely arranged. A curtain lifting assembly is installed between the base and the top cover and used for driving the top cover to move close to and away from the base. The curtain lifting assembly is provided with a curtain unfolding position and a curtain storage position. A sliding groove is formed in the base, and a locking assembly is installed on the base. The locking assembly comprises a sliding piece and a locking piece. Wherein the sliding piece is installed in the sliding groove in a sliding mode and is connected with the curtain lifting assembly; the sliding piece is provided with at least one locking position in the sliding groove. The locking piece is installed on the base, when the sliding piece slides to the locking position, the locking piece abuts against the sliding piece, the sliding piece is limited, and then rotation of the curtain lifting assembly is limited. Mechanical limiting is formed through cooperation of the locking piece and the sliding piece, the curtain is fixed to the unfolding position, and the situation that the curtain shakes or is folded accidentally due to factors such as vibration in the using process is avoided.

Description

Technical Field

[0001] This application relates to the technical field of projection screens, and more particularly to a projection screen and a vehicle. Background Technology

[0002] As cars become more and more common, they are no longer just a means of transportation, but a mobile terminal product that integrates multiple life functions, and the functions of in-vehicle systems are gradually becoming richer.

[0003] Traditional in-vehicle audio-visual systems can only use the small screen provided by the car's flip screen to watch movies and TV shows, resulting in a poor viewing experience and causing eye fatigue for passengers. Therefore, in order to meet passengers' needs for a better in-vehicle environment, in-vehicle projection products have emerged.

[0004] However, the stability of existing in-vehicle projection screens is poor. During vehicle operation, they are prone to shaking or unexpectedly collapsing due to vehicle vibrations, affecting the passenger's viewing experience. Utility Model Content

[0005] This utility model solves, to at least a certain extent, one of the technical problems in the related art.

[0006] Therefore, this application aims to provide a projection screen and vehicle, in which a locking component is installed between the base of the projection screen and the screen lifting component. When the screen lifting component is rotated to the screen unfolded position, the locking component and the sliding component in the locking component abut against each other to form a mechanical limit, thereby fixing the screen lifting component in the screen unfolded position. This achieves reliable locking of the screen in the unfolded state and avoids the screen from shaking or accidentally retracting due to vibration or other factors during use.

[0007] To achieve the above objectives, in a first aspect, this utility model provides a projection screen, comprising:

[0008] The base has a sliding groove.

[0009] The top cover is positioned opposite the base.

[0010] The curtain lifting assembly has one end hinged to the base and the other end hinged to the top cover.

[0011] Locking component, the locking component includes:

[0012] A sliding component is slidably installed in a slide groove and connected to the curtain lifting assembly; the sliding component has at least one locking position in the slide groove.

[0013] A locking element is mounted on the base; when the sliding element slides to the locking position, the locking element abuts against the sliding element.

[0014] In this technical solution, a sliding component is slidably installed in a groove in the base, with one end connected to the screen lifting assembly. As the sliding component moves within the groove, it drives the screen lifting assembly to rotate between the screen's unfolded and retracted positions, thereby raising and lowering the top cover relative to the base. When the screen lifting assembly rotates to the unfolded position, the sliding component reaches the end of the groove. At this point, a locking component abuts against the sliding component, mechanically limiting its reverse sliding and fixing the screen lifting assembly in the unfolded position. This reliably locks the screen in its unfolded state, preventing screen shaking or accidental retraction due to vibrations or other factors during use.

[0015] Furthermore, in existing technologies, the locking structures for projection screens in their closed or unfolded states are typically complex and bulky, resulting in high production costs and making them unsuitable for installation in space-constrained environments. In this application, the sliding and locking components have simple structures, and the overall locking assembly is compact, allowing direct installation within the base's groove without the need for additional brackets. This facilitates miniaturization of the projection screen and better adapts to applications with limited installation space, such as those in vehicles.

[0016] In some embodiments of this application, the curtain lifting assembly has a curtain unfolding position and a curtain retracting position;

[0017] The locking components include:

[0018] Locking body, the locking body is mounted on the base;

[0019] The lock cylinder is retractably mounted on the locking body and has a locking cylinder limiting surface and an inclined surface. The locking cylinder limiting surface is a vertical plane, and the inclination angle of the inclined surface can be adjusted according to the required guiding resistance of the sliding component.

[0020] During the process of the curtain lifting assembly rotating from the curtain storage position to the curtain unfolding position, the sliding component slides in the slide groove and is in contact with the inclined surface;

[0021] When the curtain lifting assembly rotates to the curtain unfolded position, the sliding part slides to the locking position, and the locking head limiting surface abuts against the sliding part.

[0022] In the technical solution, during the process of the sliding member sliding to the curtain lifting assembly in the curtain unfolded position, the sliding member contacts and connects with the inclined surface and applies pressure to the lock head, causing the lock head to retract into the locking body, thereby allowing the sliding member to continue sliding forward; when the sliding member slides in the slide groove to the curtain lifting assembly in the curtain unfolded position, the sliding member separates from the inclined surface, stops applying pressure to the lock head, and the lock head automatically extends under its own elastic force and abuts against the sliding member to limit the sliding member. This process eliminates the movement obstruction of the locking member during the sliding process without additional operation, and completes the locking when the sliding member slides to the position and abuts against the sliding member. The operation is convenient and helps to improve the user experience.

[0023] In some embodiments of this application, a first limiting part is provided on the slider, and the first limiting part has a first limiting surface and a mating surface;

[0024] During the process of the curtain lifting assembly rotating from the curtain storage position to the curtain unfolding position, the sliding component slides in the slide groove, and the mating surface contacts and connects with the inclined surface;

[0025] When the curtain lifting assembly rotates to the curtain unfolding position, the sliding member slides to the locking position, and the locking head limiting surface abuts against the first limiting surface.

[0026] In the technical solution, the mating surface can be an arc-shaped surface or an inclined surface. During the sliding process, it cooperates with the inclined surface of the lock head to guide the lock head back, which helps to reduce friction, improve the smoothness of the sliding of the locking parts, and thus improve the stability of the curtain unfolding process. When the curtain lifting assembly is in the curtain unfolded position, the first limiting surface is in contact with the locking head limiting surface to form a vertical limit, which improves the stability of the limiting and fixing of the sliding parts, thereby ensuring the stability of the curtain unfolded state.

[0027] In some embodiments of this application, the curtain lifting assembly has a curtain storage location;

[0028] The sliding member is provided with a second limiting part; the second limiting part has a second limiting surface;

[0029] When the curtain lifting assembly rotates to the curtain storage position, the sliding member slides to the locking position, and the second limiting surface abuts against the locking body.

[0030] In the technical solution, during the curtain retraction process, the curtain lifting assembly drives the sliding member to slide towards the curtain retraction position within the slide groove. When the sliding member slides the curtain lifting assembly to the curtain retraction position, the second limiting surface of the second limiting part on the sliding member contacts and abuts against the locking body. At this time, a physical barrier is formed between the second limiting surface and the locking body, preventing the sliding member from continuing to move in the curtain retraction direction, thereby limiting further rotation of the curtain lifting assembly and avoiding the problem of excessive rotation of the curtain lifting assembly causing damage to its own structure or to other components.

[0031] In some embodiments of this application, the curtain lifting assembly includes a first connector and a second connector that are hinged to each other;

[0032] The end of the first connector away from the second connector is hinged to the top cover;

[0033] The end of the second connector away from the first connector is hinged to the base.

[0034] In the technical solution, the first connector and the second connector are hinged to each other and respectively to the base and the top cover to form a linkage mechanism. This mechanism has a definite motion trajectory, which enables the curtain to rise and fall smoothly in the vertical direction under the drive of the curtain lifting assembly, ensuring the flatness and stability of the curtain during the lifting process.

[0035] In some embodiments of this application, the curtain lifting assembly further includes one or a combination of a first limiting mechanism and a second limiting mechanism;

[0036] The first limiting mechanism includes a first limiting pin and a first fixed seat;

[0037] The first limiting pin is located at the end of the first connector that is furthest from the second connector;

[0038] The first fixing seat is installed on the top cover and is hinged to the first connecting piece; the first fixing seat is provided with a first limiting groove and the first limiting pin is slidably disposed in the first limiting groove;

[0039] The second limiting mechanism includes a second limiting pin and a second fixed seat;

[0040] The second limiting pin is located at the end of the second connector that is furthest from the first connector;

[0041] The second fixing seat is installed on the base and is hinged to the second connecting piece; the second fixing seat is provided with a second limiting groove and the second limiting pin is slidably disposed in the second limiting groove.

[0042] In the technical solution, by setting a limiting mechanism, the rotation angle of the first connecting member and / or the second connecting member in the curtain lifting assembly can be effectively limited during the lifting process. When the first connecting member and / or the second connecting member rotates to the limit position, the limiting pin abuts against the groove wall, preventing the first connecting member and / or the second connecting member from continuing to rotate, thus avoiding damage to the mechanical structure or the curtain caused by excessive rotation of the curtain lifting assembly.

[0043] In some embodiments of this application, the curtain lifting assembly further includes:

[0044] The third connector has one end hinged to the second connector and the other end hinged to the sliding member.

[0045] In the technical solution, the third connecting member is a short connecting rod, with one end hinged to the middle of the second connecting member and the other end hinged to the sliding member. On the one hand, it realizes a rigid connection between the sliding member and the curtain lifting assembly, ensuring the synchronicity and stability of power transmission. On the other hand, it converts the horizontal movement of the sliding member into the rotation of the second connecting member, thereby driving the first connecting member to move synchronously, making the movement between the connecting members more coordinated and synchronized, reducing the shaking during the curtain lifting process, and improving the stability of the curtain during the lifting process.

[0046] In some embodiments of this application, the curtain lifting assembly further includes one or a combination of a first elastic element and a second elastic element;

[0047] One end of the first elastic member is connected to the first connecting member, and the other end passes around the hinge between the first connecting member and the top cover and is connected to the top cover.

[0048] One end of the second elastic member is connected to the second connecting member, and the other end passes around the hinge between the second connecting member and the base and is connected to the base.

[0049] In this technical solution, a first elastic element is connected between the first connector and the top cover. When the screen unfolds, the first connector rotates downwards, stretching the first elastic element and providing a cushioning effect, allowing the screen to descend slowly and smoothly. When the screen is retracted, the contraction force of the first elastic element generates a torque in the corresponding rotational direction on the first connector, assisting its rotation and reducing the force required for the user to lift the screen. Similarly, a second elastic element is connected between the second connector and the base, and its elastic force plays a similar role to the first elastic element during screen lifting, assisting the second connector's rotation. By using elastic elements to assist in screen lifting, the movement of the screen lifting assembly becomes smoother, reducing operating force and providing cushioning, thereby improving the lifespan of the projection screen and the user experience.

[0050] In some embodiments of this application, a sensor is further included. The sensor is mounted on the base and connects with the top cover when the curtain lifting assembly rotates to the curtain storage position.

[0051] In this technical solution, the sensor is mounted on the base. When the screen lifting assembly is in the retracted position, the top cover contacts the sensor. This contact can be a physical contact or triggered by electromagnetic induction, optical obstruction, or other methods. After detecting that the screen is in the retracted position, the sensor can send a signal to the external control system. For example, upon receiving the signal, the control system can automatically shut down the drive mechanism controlling the screen lifting to prevent the screen from rising excessively, or automatically turn off the power to the projection equipment to avoid energy waste and equipment damage caused by the user forgetting to turn it off.

[0052] In a second aspect, this utility model provides a vehicle, comprising:

[0053] Vehicle body;

[0054] The projection screen is the same as described above; wherein the base is mounted on the vehicle body.

[0055] In the technical solution, by installing a projection screen on the vehicle body, the user's demand for a better in-vehicle environment atmosphere can be better met, and the user's viewing experience can be improved.

[0056] As can be seen from the above technical solutions, additional aspects and advantages of this utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this utility model. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the overall structure of the projection screen at a first angle according to an embodiment of this application;

[0058] Figure 2 This is a schematic diagram of the overall structure of the projection screen from a second angle according to an embodiment of this application;

[0059] Figure 3 yes Figure 2 Enlarged structural diagram of Part I;

[0060] Figure 4 This is a schematic diagram of the overall structure of the projection screen from a third angle according to an embodiment of this application;

[0061] Figure 5 yes Figure 4 Enlarged structural diagram of Part I;

[0062] Figure 6 This is a front view of a projection screen according to an embodiment of this application;

[0063] Figure 7 This is a schematic diagram of the overall structure of the projection screen in its stowed state according to an embodiment of this application.

[0064] Figure 8 This is a top view of the projection screen in its stowed state according to an embodiment of this application;

[0065] Figure 9 yes Figure 8 AA section view;

[0066] Figure 10 yes Figure 9 Enlarged structural diagram of Part I;

[0067] Figure 11 yes Figure 8 BB cross-sectional view;

[0068] Figure 12 yes Figure 11 Enlarged structural diagram of Part I;

[0069] Figure 13 This is a top view of the projection screen in its unfolded state according to an embodiment of this application;

[0070] Figure 14 yes Figure 13 CC section view;

[0071] Figure 15 yes Figure 14 Enlarged structural diagram of Part I;

[0072] Figure 16 yes Figure 14 Enlarged structural diagram of section II;

[0073] Figure 17 This is a schematic diagram of the structure of the slider and the third connecting member according to an embodiment of this application;

[0074] Figure 18 This is a schematic diagram of the structure of the sliding member and the sliding fixing member according to the embodiments of this application;

[0075] Figure 19 This is a structural schematic diagram of a locking member according to an embodiment of this application.

[0076] In the above figures: 100, base; 101, slide groove; 102, sliding fastener; 103, connecting block;

[0077] 200. Top cover;

[0078] 300. Curtain lifting assembly; 301. First connector; 3011. First limiting pin; 302. Second connector; 3021. Second limiting pin; 303. Hinge shaft; 304. First elastic element; 3041. First tension spring; 3042. First pull cable; 305. Second elastic element; 3051. Second tension spring; 3052. Second pull cable; 306. First fixing seat; 3061. First limiting groove; 307. Second fixing seat; 3071. Second limiting groove; 308. Third connector;

[0079] 400. Locking assembly; 401. Locking member; 4011. Locking body; 4012. Lock head; 402. Sliding member; 4021. First limiting part; 4022. Second limiting part;

[0080] 500. Curtain;

[0081] 600. Sensors. Detailed Implementation

[0082] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0083] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0084] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0085] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0086] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0087] As cars become more widespread and intelligent, they are no longer limited to a means of transportation, but rather a mobile terminal product that integrates multiple lifestyle functions.

[0088] In order to keep up with this trend, automakers are paying more and more attention to the comfort of rear passengers. In-vehicle audio-visual entertainment systems, which aim to provide rear passengers with diversified functions such as in-vehicle movie watching and in-vehicle conferencing, have also become an important part of modern car design.

[0089] In-vehicle entertainment systems typically integrate display devices, audio components, and control systems. Among these, the display device serves as the core interactive medium, and its performance directly impacts the user experience.

[0090] In existing technologies, the display device is typically a flip-up screen fixed to the vehicle roof. While such screens provide video display functionality for rear passengers and offer some spatial flexibility, their complex mechanical structure and manual operation during folding make them inconvenient. Furthermore, due to space constraints within the vehicle, these screens are usually small in size, resulting in a poor viewing experience and increased eye strain for passengers.

[0091] To address this issue, some vehicles are beginning to use projection screens instead of flip-up displays in existing technologies. By combining a projector with a screen 500, images can be displayed, and the projection size can be adjusted as needed, offering both flexibility and visual impact.

[0092] However, currently available in-vehicle projection screens typically only have a locking function when folded, and cannot lock when unfolded. In the actual use environment of in-vehicle projection screens, vehicles vibrate due to various reasons while driving. If the screen 500 is not locked when unfolded, this vibration will be transmitted to the projection screen, causing the screen surface to shake, which will seriously affect the viewing experience for passengers.

[0093] Based on this, this application proposes a projection screen in which a locking component 400 is installed between the base 100 of the projection screen and the screen lifting assembly 300. When the screen lifting assembly 300 rotates to the screen unfolded position, the locking member 401 in the locking component 400 abuts against the sliding member 402 to form a mechanical limit, thereby fixing the screen lifting assembly 300 in the screen unfolded position. This achieves reliable locking of the screen 500 in the unfolded state and avoids the screen 500 from shaking or accidentally retracting due to vibration or other factors during use.

[0094] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0095] As attached Figures 1 to 19 As shown in an illustrative embodiment of the projection screen of this utility model, the projection screen can receive the projection light projected by the projector to display images. This projection screen can be used as a vehicle-mounted screen in vehicles or other means of transportation. The projection screen includes a base 100, a top cover 200, a screen lifting assembly 300, and a locking assembly 400.

[0096] The base 100 is a box-shaped structure with its opening facing downwards, and an internal cavity is formed therein, in which a sliding groove 101 is provided.

[0097] The top cover 200 is positioned opposite the base 100, and the top cover 200 and the base 100 can be used to connect a projection screen 500.

[0098] It should be noted that the projection screen may also include a screen 500, a screen retractor, and a drive unit. The screen retractor is rotatably mounted within the receiving cavity of the base 100. The drive unit is mounted within the receiving cavity of the base 100, and its power output end is connected to the screen retractor to drive its rotation. One end of the screen 500 is connected to the screen retractor, and the other end is connected to the top cover 200. When the drive unit drives the screen retractor to rotate, it can retract or extend the screen 500 for easy storage and unfolding. It should be noted that both the screen retractor and the drive unit are mounted within the receiving cavity of the base 100, but are not shown in the figure.

[0099] The screen lifting assembly 300 is a foldable linkage structure, with one end hinged to the base 100 and the other end hinged to the top cover 200, allowing it to rotate in a vertical plane. The screen lifting assembly 300 has an unfolded screen position and a retracted screen position. When the screen lifting assembly 300 rotates between the unfolded and retracted positions, it causes the top cover 200 to rise or fall relative to the base 100, thereby unfolding or retracting the screen 500.

[0100] The locking assembly 400 is installed within the receiving cavity of the base 100, such as... Figure 19 As shown, it includes a sliding member 402 and a locking member 401.

[0101] Specifically, the slider 402 is a long strip-shaped slider, such as... Figure 17 As shown, it is slidably installed in the slide groove 101. The sliding member 402 is connected to the curtain lifting assembly 300 and slides in the slide groove 101 as the position of the curtain lifting assembly 300 is adjusted.

[0102] The slider 402 has at least one locking position in the slide groove 101, which may include locking for the curtain unfolded position, locking for the curtain retracted position, and locking for other intermediate positions of the curtain.

[0103] In this embodiment, the slider 402 has two locking positions within the slide groove 101, namely a first locking position and a second locking position. When the slider 402 is in the first locking position, the curtain lifting assembly 300 is in the curtain unfolded position; when the slider 402 is in the second locking position, the curtain lifting assembly 300 is in the curtain retracted position; when the curtain lifting assembly 300 rotates between the curtain unfolded position and the curtain retracted position, the slider 402 slides between the first locking position and the second locking position.

[0104] The locking member 401 is fixedly installed on the base 100. When the sliding member 402 slides to the first locking position, the curtain lifting assembly 300 is in the curtain unfolded position. The locking member 401 abuts against the sliding member 402, limiting the sliding member 402 and preventing it from sliding in the opposite direction, thereby fixing the curtain 500 in the unfolded state.

[0105] In the technical solution, the slider 402 is slidably installed in the slide groove 101 of the base 100, and one end of it is connected to the screen lifting assembly 300. This allows the slider 402 to slide within the slide groove 101, driving the screen lifting assembly 300 to rotate between the screen unfolded position and the screen retracted position, thereby causing the top cover 200 to rise or fall relative to the base 100. When the screen lifting assembly 300 rotates to the screen unfolded position, the slider 402 reaches the end of the slide groove 101. At this time, the locking member 401 abuts against the slider 402, mechanically limiting the slider 402 and restricting its reverse sliding. This fixes the screen lifting assembly 300 in the screen unfolded position, achieving reliable locking of the screen 500 in the unfolded state and preventing the screen 500 from shaking or accidentally retracting due to vibrations or other factors during use.

[0106] Furthermore, in existing technologies, the locking structures for projection screens in closed or unfolded states are typically complex and bulky, resulting in high production costs and making them unsuitable for installation in space-constrained environments. In this application, the sliding member 402 and locking member 401 have simple structures, and the overall locking assembly 400 has a compact structure, allowing it to be directly installed within the groove 101 of the base 100 without the need for additional brackets for installation and fixation. This facilitates the miniaturization of the projection screen and better adapts to applications with limited installation space, such as those in vehicles.

[0107] In some embodiments of this application, such as Figure 18As shown, the base 100 further includes a sliding fastener 102, which is disposed within the receiving cavity of the base 100 and fixedly connected to the base 100 by screws or other fasteners. The sliding fastener 102 includes at least two opposing end faces, each with opposing grooves 101 for mounting the sliding member 402. By adding the sliding fastener 102 to the base 100 to mount the sliding member 402, there is no need to create grooves within the receiving cavity of the base 100, thus improving the convenience of projection screen manufacturing, processing, and assembly.

[0108] In some embodiments of this application, the sliding fastener 102 includes two opposing crossbars. The two crossbars are respectively fixedly connected to the base 100. Sliding grooves 101 are formed on the opposite end faces of the two crossbars, and a slider 402 is installed between the two crossbars. The use of crossbars for the sliding fastener 102 has two advantages: firstly, it reduces the volume of the sliding fastener 102 and the space it occupies within the accommodating cavity of the base 100; secondly, it reduces the overall weight of the projection screen, facilitating installation and transportation.

[0109] In some embodiments of this application, cylindrical metal pins are fixed on both sides of the slider 402 in the width direction, and the metal pins on both sides are respectively inserted into the sliding grooves 101 on both sides to achieve a sliding connection with the base 100.

[0110] Accordingly, the vertical cross-section of the slide groove 101 is elliptical, which is compatible with the cylindrical metal pin.

[0111] In some embodiments of this application, such as Figures 1 to 4 As shown, two sets of curtain lifting components 300 and locking components 400 are arranged opposite each other on both sides of the width direction of the curtain 500. The two sets of curtain lifting components 300 and locking components 400 are symmetrically arranged with respect to the center line of the curtain 500 to improve the balance and stability of the curtain 500 during the unfolding and retraction process.

[0112] It is understandable that when the curtain lifting assembly 300 and the locking assembly 400 are arranged in two sets opposite to each other, the structures or components that cooperate with the curtain lifting assembly 300 and the locking assembly 400 in the top cover 200 and the base 100 are also arranged in two sets opposite to each other.

[0113] In some embodiments of this application, such as Figure 19 As shown, when two sets of curtain lifting components 300 and locking components 400 are arranged opposite each other, the locking members 401 in the two locking components 400 are fixedly connected by a connecting block 103, and the connecting block 103 is fixedly connected to the base 100 by fasteners such as screws.

[0114] In some embodiments of this application, such as Figure 15 and Figure 19As shown, the locking member 401 includes a locking body 4011 and a lock head 4012.

[0115] The locking body 4011 is fixedly installed on the base 100 and located below the slider 402 to avoid obstructing the sliding of the slider 402.

[0116] The lock head 4012 is retractably mounted on the locking body 4011 and extends upward into the sliding path of the slider 402. The lock head 4012 has a lock head limiting surface and an inclined surface, wherein the lock head limiting surface is set towards the first locking position and the inclined surface is set towards the second locking position.

[0117] During the process of sliding the slider 402 towards the first locking position within the slide groove 101, that is, during the process of the curtain lifting assembly 300 rotating from the curtain storage position to the curtain unfolding position, the slider 402 contacts the inclined surface, and the inclined surface guides the slider 402. The slider 402 applies pressure to the lock head 4012 through the inclined surface, causing the lock head 4012 to retract into the locking body 4011, thereby enabling the slider 402 to continue sliding forward.

[0118] As the slider 402 continues to slide forward, it slides to the first locking position within the slide groove 101. At this point, the curtain lifting assembly 300 is in the curtain unfolded position, the locking head limiting surface abuts against the slider 402, the slider 402 separates from the inclined surface, and the pressure on the locking head 4012 stops. The locking head 4012 extends under its own elastic force or electric driving force and abuts against the slider 402, thus limiting the slider 402.

[0119] During the sliding process of the slider 402 in the slide groove 101, it can apply pressure to the inclined surface itself, eliminating sliding resistance without additional operation. After the slider 402 slides into place, the lock head 4012 pops out and abuts against the slider 402 to complete the locking. The operation is convenient and helps to improve the user experience.

[0120] In some embodiments of this application, the locking member 401 is an electromagnetic lock. When the locking member 401 is an electromagnetic lock, the lock head 4012 is the bolt of the electromagnetic lock. The bolt is in the extended state by default, and retracts when energized. The signal can be collected when the position of the bolt changes.

[0121] The projection screen may further include a locking head 4012 driver, which can be connected to the locking head 4012 to control its extension and retraction. For example, the locking head 4012 driver can be connected to the locking head 4012 via a transmission connection, an electrical connection, or a signal connection. When the user needs to retract the screen 500, the locking head 4012 driver can control the locking head 4012 to retract relative to the locking body 4011, thereby releasing the restriction on the sliding member 402, so that the user can easily retract the screen 500.

[0122] In some embodiments of this application, such as Figure 17 As shown, the slider 402 is provided with a first limiting part 4021, which has a first limiting surface and a mating surface. The mating surface is disposed towards the first locking position, and the first limiting surface is disposed towards the second locking position.

[0123] During the process of sliding the slider 402 in the slide groove 101 toward the first locking position, that is, during the process of the curtain lifting assembly 300 rotating from the curtain storage position to the curtain unfolding position, the mating surface contacts the inclined surface and generates sliding friction, applying pressure to the inclined surface and guiding the lock head 4012 to retract.

[0124] When the sliding member 402 slides to the first locking position in the slide groove 101, the curtain lifting assembly 300 is in the curtain unfolded position, and the locking head limiting surface abuts against the first limiting surface to form a vertical limiting, which improves the stability of limiting and fixing the sliding member 402, ensures that the curtain lifting assembly 300 is fixed in the curtain 500 unfolded position, and thus ensures the stability of the curtain 500 unfolded state.

[0125] In some embodiments of this application, the mating surface is an arc-shaped surface or an inclined surface, which cooperates with the inclined surface of the lock head 4012 during the sliding process to guide the lock head 4012 to retract, which helps to reduce friction, improve the smoothness of the sliding of the locking member 401, and thus improve the stability of the curtain 500 during the unfolding process.

[0126] In some embodiments of this application, such as Figure 17 As shown, a second limiting part 4022 is provided on the slider 402. The second limiting part 4022 has at least one second limiting surface that is vertically oriented toward the locking body 4011.

[0127] During the unfolding of the curtain 500, the slider 402 slides from the second locking position to the first locking position, and the second limiting surface moves away from the locking body 4011. During the retraction of the curtain 500, the slider 402 slides from the first locking position to the second locking position, and the second limiting surface moves closer to the locking body 4011. When the slider 402 slides to the second locking position within the slide groove 101, the curtain lifting assembly 300 is in the curtain retraction position, and the second limiting surface abuts against the locking body 4011. A physical barrier is formed between the second limiting surface and the locking body 4011. The locking body 4011 limits the slider through the second limiting surface, preventing the slider 402 from continuing to move in the curtain retraction direction, thereby restricting further rotation of the curtain lifting assembly 300 and avoiding the problem of excessive rotation of the curtain lifting assembly 300 causing damage to its own structure or other components.

[0128] In some embodiments of this application, such as Figure 14As shown, the curtain lifting assembly 300 includes a first connector 301 and a second connector 302 that are hinged to each other.

[0129] In this design, the end of the first connector 301 furthest from the second connector 302 is hinged to the top cover 200. The end of the second connector 302 furthest from the first connector 301 is hinged to the base 100. The first connector 301 and the second connector 302 are hinged to each other and to the base 100 and the top cover 200 respectively, forming a stable linkage mechanism. This mechanism has a definite motion trajectory, enabling the screen 500 to rise and fall smoothly in the vertical direction under the drive of the screen lifting assembly 300, ensuring the flatness and stability of the screen 500 during the lifting process.

[0130] In some embodiments of this application, the first connector 301 and the second connector 302 are hinged together by a hinge shaft 303. During the unfolding and retraction of the curtain 500, the first connector 301 and the second connector 302 rotate around the hinge shaft 303, causing the curtain lifting assembly 300 to rotate to the unfolded and retracted positions. Specifically, during the unfolding of the curtain 500, the included angle between the first connector 301 and the second connector 302 gradually increases; during the retraction of the curtain 500, the included angle between the first connector 301 and the second connector 302 gradually decreases.

[0131] In some embodiments of this application, such as Figure 4 and Figure 5 As shown, the curtain lifting assembly 300 further includes one or a combination of a first limiting mechanism and a second limiting mechanism.

[0132] The first limiting mechanism includes a first limiting pin 3011 and a first fixing seat 306. The first limiting pin 3011 is located at the end of the first connecting member 301 away from the second connecting member 302. The first fixing seat 306 is mounted on the top cover 200 and is hinged to the first connecting member 301. The first fixing seat 306 is provided with a first limiting groove 3061, and the first limiting pin 3011 is slidably disposed within the first limiting groove 3061.

[0133] When the first connecting member 301 rotates relative to the first fixed base 306, the first limiting pin 3011 slides within the first limiting groove 3061. When the curtain lifting assembly 300 rotates to the curtain unfolding position and the curtain retracting position, the first limiting pin 3011 is located at both ends of the first limiting groove 3061 and abuts against the groove wall of the first limiting groove 3061. It is stopped and limited by the groove wall of the first limiting groove 3061, thereby preventing the first connecting member 301 from continuing to rotate and avoiding damage to its own mechanical structure or the curtain 500 caused by excessive rotation of the curtain lifting assembly 300.

[0134] The second limiting mechanism includes a second limiting pin 3021 and a second fixed base 307. The second limiting pin 3021 is disposed at the end of the second connecting member 302 away from the first connecting member 301. The second fixed base 307 is mounted on the base 100 and is hinged to the second connecting member 302. The second fixed base 307 is provided with a second limiting groove 3071, and the second limiting pin 3021 is slidably disposed within the second limiting groove 3071.

[0135] When the second connector 302 rotates relative to the second fixed base 307, the second limiting pin 3021 slides within the second limiting groove 3071. When the curtain lifting assembly 300 rotates to the curtain unfolding position and the curtain retracting position, the second limiting pin 3021 is located at both ends of the second limiting groove 3071 and abuts against the groove wall of the second limiting groove 3071. It is stopped and limited by the groove wall of the first limiting groove 3061, thereby preventing the second connector 302 from continuing to rotate and avoiding damage to its own mechanical structure or the curtain 500 caused by excessive rotation of the curtain lifting assembly 300.

[0136] In one embodiment of this application, since the first connecting member 301 and the second connecting member 302 are synchronously rotating linkage mechanisms, only one of the first limiting mechanism and the second limiting mechanism is required to achieve the function of limiting the rotation angle, which is beneficial to saving production costs and reducing the overall weight of the projection screen.

[0137] In one embodiment of this application, the first limiting mechanism and the second limiting mechanism are combined to provide multiple limiting protections for the rotation of the curtain 500 lifting mechanism, improve the stability of the curtain 500 lifting mechanism, and prevent damage to the curtain 500 lifting mechanism.

[0138] In some embodiments of this application, such as Figure 14 As shown, the curtain lifting assembly 300 further includes a third connector 308.

[0139] The third connector 308 is a short connecting rod, with one end hinged to the middle of the second connector 302 and the other end hinged to the slider 402. The third connector 308 is used to achieve a rigid connection between the slider 402 and the screen lifting assembly 300, ensuring the stability of power transmission between the slider 402 and the screen lifting assembly 300. At the same time, it is also used to convert the horizontal movement of the slider 402 into the rotation of the second connector 302, thereby driving the first connector 301 to move synchronously. This makes the movement between the first connector 301, the second connector 302 and the third connector 308 more coordinated, thereby improving the stability of the screen 500 during the lifting process, reducing vibration and further optimizing the user experience.

[0140] In some embodiments of this application, the curtain lifting assembly 300 further includes one or a combination of a first elastic element 304 and a second elastic element 305.

[0141] One end of the first elastic element 304 is connected to the first connecting element 301, and the other end passes around the hinge between the first connecting element 301 and the top cover 200 and connects to the top cover 200. The first elastic element 304 connects the first connecting element 301 and the top cover 200. When the screen 500 is unfolded, the first connecting element 301 rotates upward relative to the top cover 200, and the first elastic element 304 is stretched, providing a certain buffering effect so that the screen 500 can descend slowly and smoothly. When the screen 500 is retracted, the contraction force of the first elastic element 304 can generate a torque in the corresponding rotational direction on the first connecting element 301, assisting the first connecting element 301 in rotating and reducing the force required for the user to lift the screen 500.

[0142] One end of the second elastic element 305 is connected to the second connecting element 302, and the other end passes around the hinge between the second connecting element 302 and the base 100 and connects to the base 100. The second elastic element 305 connects the second connecting element 302 and the base 100. When the screen 500 is unfolded, the second connecting element 302 rotates downwards relative to the base 100, and the second elastic element 305 is stretched, providing a certain buffering effect so that the screen 500 can descend slowly and smoothly. When the screen 500 is retracted, the contraction force of the second elastic element 305 can generate a torque in the corresponding rotational direction on the second connecting element 302, assisting the second connecting element 302 in rotating and reducing the force required for the user to lift the screen 500.

[0143] By incorporating elastic components to assist in the raising and lowering of the screen 500, the movement of the screen raising and lowering assembly 300 becomes smoother, reducing the operating force and providing cushioning, thereby improving the lifespan of the projection screen and the user experience.

[0144] In some embodiments of this application, such as Figures 8 to 16 As shown, the first elastic element 304 includes a first pull wire 3042 and a first tension spring 3041 connected to each other. The first tension spring 3041 is fixedly connected to the first connector 301, and the first pull wire 3042 passes around the hinge between the first connector 301 and the top cover 200 and connects to the top cover 200.

[0145] In some embodiments of this application, the second elastic member 305 includes a second pull wire 3052 and a second tension spring 3051 connected to each other, wherein the second tension spring 3051 is fixedly connected to the second connector 302, and the second pull wire 3052 passes around the hinge between the second connector 302 and the top cover 200 and connects to the top cover 200.

[0146] In one embodiment of this application, since the first connector 301 and the second connector 302 are synchronously rotating linkage mechanisms, only one of the first elastic member 304 and the second elastic member 305 needs to be provided to achieve its function of buffering and providing torque in the corresponding direction, which is beneficial to saving production costs and reducing the overall weight of the projection screen.

[0147] In one embodiment of this application, the first elastic element 304 and the second elastic element 305 are combined to provide multiple buffer forces and torques, making the movement of the screen lifting assembly 300 more stable and improving the user experience of the projection screen.

[0148] In one embodiment of this application, two sets of curtain lifting assemblies 300 are arranged opposite each other on both sides of the curtain 500 in the width direction. The two sets of curtain lifting assemblies 300 are symmetrically arranged with respect to the center line of the curtain 500, namely the left curtain lifting assembly 300 and the right curtain lifting assembly 300. Both the left and right curtain lifting assemblies 300 are provided with a combination of a first elastic element 304 and a second elastic element 305, and the specifications and lengths of the first elastic element 304 and the second elastic element 305 in the left and right curtain lifting assemblies 300 are the same.

[0149] Specifically, in the left-side curtain lifting assembly 300:

[0150] The first elastic element 304 remains in a stretched state during the rotation of the first connecting member 301 around the axis, continuously applying a counterclockwise torque to the first connecting member 301. The second elastic element 305 remains in a stretched state during the rotation of the second connecting member 302 around the axis, continuously applying a clockwise torque to the second connecting member 302.

[0151] In the left-side curtain lifting assembly 300:

[0152] The first elastic element 304 remains in a stretched state during the rotation of the first connecting member 301 around the axis, and continuously applies a clockwise torque to the first connecting member 301. The second elastic element 305 remains in a stretched state during the rotation of the second connecting member 302 around the axis, and continuously applies a counterclockwise torque to the second connecting member 302.

[0153] In some embodiments of this application, such as Figure 3 and Figure 19 As shown, it further includes a sensor 600.

[0154] The sensor 600 is mounted on the base 100. When the screen lifting assembly 300 is in the screen retracted position, the top cover 200 comes into contact with the sensor 600. This contact can be a physical contact or the sensor 600 can be triggered by electromagnetic induction, optical obstruction, or other means.

[0155] Once sensor 600 detects that screen 500 is in the retracted position, it can send a signal to the vehicle's control system. For example, upon receiving the signal, the control system can automatically shut down the drive mechanism that controls the raising and lowering of screen 500 to prevent screen 500 from rising excessively, or automatically turn off the power to the projection equipment to avoid energy waste and equipment damage caused by the user forgetting to turn it off.

[0156] In some embodiments of this application, the sensor 600 is specifically a micro switch.

[0157] In some embodiments of this application, the sensor 600 is installed at the central axis of the curtain 500 in order to better detect whether the curtain 500 is properly retracted, and to prevent the sensor 600 from being affected by the asynchronous retraction of the two ends of the curtain 500.

[0158] In one embodiment of this application, the drive unit, electromagnetic lock, and micro switch are all connected to the in-vehicle control system, and can receive signals sent by the in-vehicle control system, as well as send signals to the in-vehicle control system.

[0159] The unfolding process of Curtain 500 is as follows:

[0160] The control system controls the drive unit to rotate the curtain retractor, during which the curtain 500 gradually opens downwards. Simultaneously, the first connector 301 and the second connector 302 rotate at the same speed under the action of the pull cable and tension spring, keeping the top cover 200 horizontal and ensuring a smooth, stable unfolding of the curtain 500. During the rotation of the second connector 302, the third connector 308 drives the sliding member 402 to move from the first direction to the second direction within the slide groove 101. When the sliding member 402 slides to the first limit part 4021, it contacts the latch of the electromagnetic lock and pushes it to retract. During this process, the top cover 200 remains horizontal, ensuring a smooth, stable unfolding of the curtain 500.

[0161] When the control system detects a change in the position of the locking tongue, the control drive stops rotating, and the curtain 500 is fully opened. At this time, the sliding member 402 is limited by the electromagnetic lock and cannot move in the second direction. Furthermore, the first connecting member 301 and the second connecting member 302, with the cooperation of their respective limiting pins and limiting grooves, cannot continue to move in the first direction, thus locking the curtain 500 in the unfolded state.

[0162] The closing process of the screen 500 is as follows:

[0163] The control system energizes the electromagnetic lock, causing the latch to retract and the sliding member 402 to move in the second direction. Simultaneously, the control system controls the drive unit to rotate the curtain retractor in the opposite direction, causing the curtain 500 to gradually roll upwards. At the same time, the first connecting member 301 and the second connecting member 302 rotate at the same speed under the action of the pull cable and tension spring, ensuring that the top cover 200 remains horizontal throughout the process, and that the curtain 500 remains stable during its retraction.

[0164] When the top cover 200 contacts the micro switch, the control system receives the electrical signal sent by the micro switch and controls the drive to stop driving the curtain retractor to rotate, and the curtain 500 is retracted.

[0165] Secondly, this utility model provides a vehicle, including a vehicle body and a projection screen.

[0166] The projection screen is the one described above. The base 100 is mounted on the vehicle body; for example, the base 100 can be mounted on the roof. By installing a projection screen on the vehicle body, the user's demand for a better in-vehicle environment can be better met, enhancing the user's viewing experience. Since the vehicle includes a projection screen, it possesses all the beneficial effects of a projection screen, which will not be elaborated upon here.

[0167] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A projection screen, characterized by It includes: A base, a sliding slot is arranged on the base; A top cover, the top cover is arranged opposite to the base; A curtain lifting assembly, one end of the curtain lifting assembly is hinged to the base, and the other end is hinged to the top cover; A locking assembly, the locking assembly includes: A sliding piece, the sliding piece is slidingly installed in the sliding slot, and the sliding piece is connected with the curtain lifting assembly; The sliding piece has at least one locking position in the sliding slot; A locking piece is installed on the base; when the sliding piece slides to the locking position, the locking piece abuts against the sliding piece.

2. The projection screen of claim 1, wherein, The curtain lifting assembly has a curtain unfolding position and a curtain storage position; The locking piece includes: A locking body, the locking body is installed on the base; A lock head, the lock head is telescopically installed on the locking body, and the lock head has a lock head limiting surface and an inclined surface; During rotation of the curtain lifting assembly from the curtain storage position to the curtain unfolding position, the sliding piece slides in the sliding slot, and the sliding piece is in contact with the inclined surface; When the curtain lifting assembly is rotated to the curtain unfolding position, the sliding piece slides to the locking position, and the lock head limiting surface abuts against the sliding piece.

3. The projection screen of claim 2, wherein, The sliding piece is provided with a first limiting portion, and the first limiting portion has a first limiting surface and a matching surface; During rotation of the curtain lifting assembly from the curtain storage position to the curtain unfolding position, the sliding piece slides in the sliding slot, and the matching surface is in contact with the inclined surface; When the curtain lifting assembly is rotated to the curtain unfolding position, the sliding piece slides to the locking position, and the lock head limiting surface abuts against the first limiting surface.

4. The projection screen according to any one of claims 1-3, wherein, The curtain lifting assembly has a curtain storage position; The locking piece includes a locking body, and the locking body is installed on the base; The sliding piece is provided with a second limiting portion, and the second limiting portion has a second limiting surface; When the curtain lifting assembly is rotated to the curtain storage position, the sliding piece slides to the locking position, and the second limiting surface abuts against the locking body.

5. The projection screen of claim 1, wherein, The curtain lifting assembly includes a first connecting piece and a second connecting piece hinged to each other; One end of the first connecting piece away from the second connecting piece is hinged to the top cover; One end of the second connecting piece away from the first connecting piece is hinged to the base.

6. The projection screen of claim 5, wherein, The curtain lifting assembly further includes one or a combination of a first limiting mechanism and a second limiting mechanism; The first limiting mechanism includes a first limiting pin and a first fixed seat; The first limiting pin is arranged at one end of the first connecting piece away from the second connecting piece; The first fixed seat is installed on the top cover, and the first fixed seat is hinged to the first connecting piece; the first fixed seat is provided with a first limiting groove, and the first limiting pin is slidingly arranged in the first limiting groove; The second limiting mechanism includes a second limiting pin and a second fixed seat; The second limiting pin is arranged at one end of the second connecting piece away from the first connecting piece; The second fixing base is installed on the base, and the second fixing base is hingedly connected with the second connecting piece; a second limiting slot is arranged on the second fixing base, and a second limiting pin is slidingly arranged in the second limiting slot.

7. The projection screen according to claim 5 or 6, characterized in that The curtain lifting assembly further comprises: A third connecting piece, one end of which is hingedly connected with the second connecting piece, and the other end of which is hingedly connected with the sliding piece.

8. The projection screen according to claim 5 or 6, characterized in that The curtain lifting assembly further comprises one or a combination of a first elastic piece and a second elastic piece; One end of the first elastic piece is connected with the first connecting piece, and the other end of the first elastic piece is connected with the top cover around the hinged connection between the first connecting piece and the top cover; One end of the second elastic piece is connected with the second connecting piece, and the other end of the second elastic piece is connected with the base around the hinged connection between the second connecting piece and the base.

9. The projection screen of claim 1, wherein, Further comprising a sensor, which is installed on the base, and the sensor is in contact with the top cover when the curtain lifting assembly is turned to the curtain storage position.

10. A vehicle characterized by comprising: Comprise: A vehicle body; A projection screen, the projection screen is any one of the projection screens according to claims 1 to 9; wherein the base is installed on the vehicle body.

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