Curtain folding and unfolding mechanism, projection curtain device and vehicle

Abstract

The invention relates to a curtain folding and unfolding mechanism, a projection curtain device and a vehicle. The curtain folding and unfolding mechanism comprises a first supporting piece, a second supporting piece and a connecting rod assembly. The second supporting piece is used for being connected with a projection curtain. The connecting rod assembly is connected between the first supporting piece and the second supporting piece so that the second supporting piece can be rotationally folded or unfolded relative to the first supporting piece, the projection assembling requirement of the projection curtain in the width direction of the vehicle body can be met during unfolding, and the occupied space of the curtain folding and unfolding mechanism in the vehicle can be reduced during folding; and the compactness requirement on the space arrangement in the vehicle is met. And the rotating center point of the second supporting piece is located outside the second supporting piece, and a distance is formed between the rotating center point of the second supporting piece and the top end of the second supporting piece in the length direction of the second supporting piece, so that the second supporting piece has large displacement in the width direction of the vehicle body, and the space arrangement in the vehicle is further optimized.

Description

Technical Field

[0001] This application relates to the field of projection screen technology, and in particular to a screen deployment and retraction mechanism, a projection screen device, and a vehicle. Background Technology

[0002] With the increasing demand for functional features in vehicles, more and more cars are equipped with projection screen devices. A projection screen device includes a projection screen, which serves as the medium for projected images.

[0003] In related technologies, the projection screen device can be arranged on any one or both sides of the vehicle interior along the width of the vehicle body, or in the middle of the vehicle interior along the width of the vehicle body, or in all parts of the vehicle interior along the width of the vehicle body.

[0004] For projection screen devices located on the side of the vehicle interior, the projection screen device also includes a fixed triangular partition structure, on which the projection screen is installed. However, the fixed triangular partition structure occupies a large space inside the vehicle, which cannot meet the requirements for compact layout in the vehicle interior space. For example, it may interfere with the adjustment of the vehicle seats in the fore-and-aft direction. Summary of the Invention

[0005] Therefore, it is necessary to address the shortcomings of existing technologies by providing a screen deployment and retraction mechanism, a projection screen device, and a vehicle that can meet the compact requirements of vehicle interior space layout.

[0006] On the one hand, this application provides a screen deployment and retraction mechanism, including:

[0007] A first support member, the first support member being used for connection to a counterpart of a vehicle;

[0008] A second support member, the second support member being used for connection with the projection screen; and

[0009] A linkage assembly is connected between the first support member and the second support member so that the second support member can be rotated, folded or unfolded relative to the first support member, and the rotation center point of the second support member is located outside the second support member, and is spaced apart from the top end of the second support member along the length direction of the second support member.

[0010] In one embodiment, the linkage assembly includes: a first link, a second link, a third link, and a first slider;

[0011] The first sliding member is slidably disposed on the first support member or the opponent member along the length direction of the first support member;

[0012] The first connecting rod has a first end and a second end opposite to each other. The first end is connected to the first sliding member, and the second end is rotatably disposed on the second support member and can slide along the length direction of the second support member.

[0013] The second connecting rod has a third end and a fourth end opposite to each other. The third end is connected to the first sliding member, and the fourth end is connected to the third connecting rod.

[0014] The third link has a fifth end and a sixth end opposite to each other. The fifth end is connected to the first support member, and the sixth end is rotatably disposed on the second support member and can slide along the length direction of the second support member.

[0015] In one embodiment, the curtain retraction mechanism further includes a second sliding member connected to the first support member, and the fifth end is connected to the second sliding member.

[0016] In one embodiment, the curtain retraction mechanism further includes a drive element connected to the linkage assembly.

[0017] In one embodiment, the driving member is connected to the first sliding member, and the driving member is used to drive the first sliding member to slide along the length direction of the first support member.

[0018] In one embodiment, the curtain retraction mechanism further includes a transmission component, and the driving component is connected to the first sliding component via the transmission component; the driving component is used to be disposed on the opponent component or the first support component.

[0019] In one embodiment, the first support member is provided with a first sliding portion extending along its length direction, and the first sliding member is slidably disposed on the first sliding portion.

[0020] In one embodiment, the second support member is provided with a second sliding portion extending along its length direction, and the second end and the sixth end are slidably disposed on the second sliding portion.

[0021] In one embodiment, the first sliding member is provided with a first ball bearing and a second ball bearing, the first end is connected to the first ball bearing, and the third end is connected to the second ball bearing; the third connecting rod is provided with a third ball bearing, and the fourth end is connected to the third ball bearing; the first support member is provided with a fourth ball bearing, and the fifth end is connected to the fourth ball bearing.

[0022] In one embodiment, the curtain retraction mechanism further includes a first guide rail for connecting to the opposing member; the second support member is slidably disposed on the first guide rail, and the first guide rail is located on top of the first support member and the second support member.

[0023] In one embodiment, the included angle between the second link and the third link is α, where 80°≤α≤100°.

[0024] In one embodiment, the length of the first link is set to L1, the length of the second link is set to L2, and the length of the third link is set to L3; wherein, L1:L2:L3 = (3.5~4.5):(2.5~3.5):(4.5~5.5).

[0025] In one embodiment, the distance between the fourth end and the fifth end is set as L4, where L4:L3 = 0.2~0.6.

[0026] In one embodiment, the second end satisfies the following condition when it moves along the second support: X1 = 0.45X ~ 0.95X;

[0027] When the sixth end moves along the second support member, it satisfies the following condition: X2 = 0.05X ~ 0.55X;

[0028] When the second support member is deployed relative to the first support member, the following conditions are met: the second end and the sixth end are each in one of the extreme positions, X1=0.45X, X2=0.05X, X1+X2=0.5X;

[0029] When the second support member is folded relative to the first support member, the following conditions are met: the second end and the sixth end are each in another extreme position, X1=0.95, X2=0.55X, X1+X2=1.4X;

[0030] Where X is the length of the second support member, the bottom end of the second support member is the reference position, X1 is the distance between the second end and the reference position, and X2 is the distance between the sixth end and the reference position.

[0031] On the other hand, this application also provides a projection screen device, including the aforementioned screen unfolding mechanism, and a projection screen, wherein the second support member is provided with a second guide rail, and the edge of the projection screen slides in cooperation with the second guide rail to unfold or close.

[0032] In one embodiment, there are two screen retraction mechanisms, which are located on opposite sides of the projection screen along its width. The opposite sides of the projection screen along its width are respectively slidably engaged with the two second guide rails.

[0033] In one embodiment, the projection screen has a winding shaft at one end along the opening and closing direction, and the other end along the opening and closing direction is a free end. The winding shaft is used to wind the projection screen and is set on the opponent. The free end is provided with a pull rod, and each end of the pull rod is provided with a third sliding member. Each of the third sliding members is slidably arranged corresponding to each of the second guide rails, and the second support member can drive the second guide rails to engage or disengage from the third sliding members by rotation.

[0034] In another aspect, a means of transportation includes a vehicle body and the projection screen device; the vehicle body is provided with a counter piece, a first support piece is disposed within the counter piece, and when the second support piece and the first support piece are rotated and folded, the second support piece moves into the counter piece.

[0035] The aforementioned screen retraction mechanism, projection screen device, and vehicle, comprising a first support member, a second support member, and a linkage assembly connecting the first and second support members, allow the second support member to unfold during operation, meeting the projection screen's assembly requirements across the vehicle's width. In the non-operating state, the second support member folds, significantly reducing the space occupied by the screen retraction mechanism within the vehicle and satisfying the compactness requirements of the interior layout. Furthermore, the rotation center point of the second support member is located outside the second support member and is spaced apart from its top along its length. This results in a larger distance between the second support member and the first support member when in the unfolded position, allowing for a greater displacement of the second support member along the vehicle's width, further optimizing the interior space layout. Attached Figure Description

[0036] Figure 1 This is a structural diagram of the curtain retraction mechanism in the unfolded position according to an embodiment of this application.

[0037] Figure 2 This is a structural diagram of a curtain unfolding mechanism according to an embodiment of this application, showing the process of the curtain moving from the unfolded position to the folded position.

[0038] Figure 3 This is another structural diagram of the curtain unfolding mechanism according to an embodiment of this application, during the process of moving from the unfolded position to the folded position.

[0039] Figure 4This is a structural diagram of the curtain retraction mechanism in the folded position according to an embodiment of this application.

[0040] Figure 5 This is a structural diagram of a projection screen device according to an embodiment of this application.

[0041] 10. Screen retraction mechanism; 11. First support member; 111. Slide groove; 112. Second sliding member; 12. Second support member; 121. Second guide rail; 13. Linkage assembly; 131. First link; 1311. First end; 1312. Second end; 1313. Reference point; 132. Second link; 1321. Third end; 1322. Fourth end; 133. Third link; 1331. Fifth end; 1332. Sixth end; 134. First sliding member; 20. Projection screen. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] As described in the background section, the fixed triangular partition structure in related technologies occupies a large space inside the vehicle, failing to meet the requirements for compact interior space arrangement. This is because fixed triangular partition structures are typically non-foldable, resulting in a large space requirement and hindering compact interior space design. Even if the projection screen devices in related technologies use a rotatable and foldable partition structure to install the projection screen, reducing interior space occupation by rotating and folding the partition structure, the projection screen's extension range along the width of the vehicle body is limited during use, thus failing to meet the need for a large extension range.

[0044] It should be noted that the "width direction" and "opening / closing direction" in this embodiment are both based on... Figure 5 "Width direction" as Figure 5 As shown in W, the "opening and closing direction" is as follows: Figure 5 As shown in H in the diagram.

[0045] For the reasons mentioned above, this application provides a screen deployment and retraction mechanism, a projection screen device, and a vehicle, which can meet the technical solution of the compactness requirement of vehicle interior space layout.

[0046] One embodiment of this application provides a means of transportation, including but not limited to any one or a combination of automobiles, ships, locomotives, buses or freight cars, which can be flexibly adjusted and configured according to actual needs.

[0047] For ease of description, this embodiment will specifically use a car as an example for detailed explanation, but it is not limited to this.

[0048] Please see Figure 5 In one embodiment, the vehicle includes a projection screen device. Specifically, the projection screen device includes a screen unfolding mechanism 10 and a projection screen 20. For example, the screen unfolding mechanism 10 can be used to roll up or unroll the projection screen 20. When in operation, the screen unfolding mechanism 10 unrolls the projection screen 20, and the projection screen 20 is unfolded and flattened, thereby enabling the display of the projected image; when in the closed state, the projection screen 20 no longer displays the projected image, and the projection screen 20 is rolled up by the screen unfolding mechanism 10.

[0049] Please see Figures 1 to 4 In any embodiment of this application, the curtain retraction mechanism 10 includes a first support member 11, a second support member 12, and a connecting rod assembly 13.

[0050] The first support member 11 is used to connect to the counterpart parts of the vehicle. The counterpart parts include, but are not limited to, the roof, body perimeter, or other sheet metal parts of the vehicle. Therefore, users can design and arrange the size, orientation, and position of the counterpart parts according to their shape and size, which helps to improve the adaptability of the counterpart parts in the vehicle and optimize the interior space.

[0051] Optionally, the first support member 11 is fixedly connected to the opposing member. The opposing member can stably install and support the first support member 11.

[0052] For example, the second support member 12 is used to connect to the projection screen 20. It should be noted that the terms "connection" and "fixation" in this embodiment should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components, unless otherwise explicitly defined.

[0053] For example, the linkage assembly 13 connects the first support member 11 and the second support member 12, allowing the second support member 12 to be folded or unfolded relative to the first support member 11. Furthermore, the rotation center point of the second support member 12 is located outside the second support member 12 and is spaced apart from its top end along the length of the second support member 12. The folding position of the second support member 12 is as follows... Figure 4 As shown, the unfolded position is as follows Figure 1 As shown, Figure 2 and Figure 3 This diagram illustrates two working states of the second support member 12 during the transition from the unfolded position to the folded position. When the second support member 12 is in the folded position, the distance between it and the first support member 11 is less than when it is in the unfolded position.

[0054] The aforementioned screen retraction mechanism 10 includes a first support member 11, a second support member 12, and a linkage assembly 13 connecting the first support member 11 and the second support member 12. The second support member 12 can be unfolded during operation to meet the projection assembly requirements of the projection screen 20 in the width direction W of the vehicle body. In the non-operating state, the second support member 12 is folded, which greatly reduces the space occupied by the screen retraction mechanism 10 inside the vehicle, meeting the compactness requirements of the vehicle's interior space layout. Furthermore, the rotation center point of the second support member 12 is located outside the second support member 12 and is spaced apart from its top end along the length direction of the second support member 12. Compared to the rotation center point being located at the top end of the second support member 12, the distance between the second support member 12 and the first support member 11 is larger when the second support member 12 is in the unfolded position, resulting in a larger displacement of the second support member 12 in the width direction W of the vehicle body, further optimizing the interior space layout. In addition, under the control of the linkage assembly 13, the second support member 12 moves along a fixed trajectory, with precise and reliable movement.

[0055] In some embodiments, the first support member 11 includes, but is not limited to, a trim piece, such as a trim panel. The second support member 12 includes, but is not limited to, a trim piece, such as a trim panel. In order to conform to the shape of the inner side of the vehicle body, the side of the first support member 11 facing away from the second support member 12 is, for example, configured as an arc shape, which facilitates installation in, for example, the A-pillar or B-pillar of the vehicle body.

[0056] The linkage assembly 13 can have various structural forms, including but not limited to two-bar, three-bar, four-bar or other multi-bar forms. It is not limited here and can be flexibly adjusted and set according to actual needs, as long as the linkage assembly 13 can make the second support member 12 rotate relative to the first support member 11 when it is in operation.

[0057] Please see Figure 1 and Figure 5 In a typical embodiment, the linkage assembly 13 is configured as a three-link assembly. Specifically, the linkage assembly 13 includes a first link 131, a second link 132, a third link 133, and a first slider 134. The first slider 134 is slidably disposed on the first support member 11 or the opposing member along the length direction of the first support member 11. The length direction of the first support member 11 is as follows: Figure 1As shown in P in the figure. In this embodiment, the example of the first sliding member 134 being slidably disposed on the first support member 11 along the length direction of the first support member 11 will be taken, but this should not be construed as a limitation on the scope of protection of this application. Because when the first sliding member 134 is slidably disposed on the first support member 11 along the length direction of the first support member 11, the rotational movement of the second support member 12 can also be realized, and the first support member 11 can also be set as a decorative plate to shield the driving member, transmission member, etc.

[0058] The first connecting rod 131 has a first end 1311 and a second end 1312. The first end 1311 is connected to the first sliding member 134, specifically, the first end 1311 and the first sliding member 134 are hinged. The second end 1312 is rotatably disposed on the second support member 12 and can slide along the length direction of the second support member 12. The second connecting rod 132 has a third end 1321 and a fourth end 1322. The third end 1321 is connected to the first sliding member 134, specifically, the third end 1321 and the first sliding member 134 are hinged. The fourth end 1322 is connected to the third connecting rod 133, specifically, the fourth end 1322 and the third connecting rod 133 are hinged. The third connecting rod 133 has a fifth end 1331 and a sixth end 1332. The fifth end 1331 is connected to the first support member 11, specifically, the fifth end 1331 and the first support member 11 are hinged. The sixth end 1332 is rotatably disposed on the second support member 12 and can slide along the length direction of the second support member 12. The length direction of the second support member 12 is as follows: Figure 1 As shown in Q. Thus, when the linkage assembly 13 operates under external force, the first sliding member 134 moves along the length of the first support member 11, and the first link 131, the second link 132, and the third link 133 each rotate adaptively, driving the second support member 12 to rotate to the folded or unfolded position. The movement trajectory of the second support member 12 is as follows: Figure 1 As shown by the dashed line S1; the movement trajectory of the first slider 134 is as follows Figure 1 As shown by the dashed line S2; any point on the first link 131 can be selected as the reference point 1313, and the trajectory of the reference point 1313 is as follows. Figure 1 The dashed line S3 in the figure shows the motion trajectory of the second end 1312 and the sixth end 1332 as follows: Figure 1 The dashed line S4 in the figure shows the motion trajectory of the fourth end 1322 as follows: Figure 1 As shown by the dotted line S5, the movement trajectory of the second support member 12 is fixed, and the movement stroke is precise and reliable. In addition, in the combination of the first link 131, the second link 132 and the third link 133, the fixed-point hinge operation is smooth, the second support member 12 opens and closes without jamming, and the operation is continuous.

[0059] For example, in actual operation, an external force is applied to the first sliding member 134, driving it to move along the length of the first support member 11. When the first sliding member 134 moves under the external force, it simultaneously drives the first connecting rod 131 to move along the dotted line S3, and the fourth end 1322 of the second connecting rod 132 to move simultaneously along the dotted line S5. The movement of the second connecting rod 132 simultaneously drives the third connecting rod 133 to perform a combined movement. The movement of the first connecting rod 131 and the third connecting rod 133 drives the second support member 12 to rotate along the dotted line S1. That is, the linkage assembly 13, through combined linkage, can convert the input power of the first sliding member 134 into precise movement of the second support member 12, enabling the second support member 12 to switch between the folded and unfolded positions.

[0060] Please see Figure 1 For example, the curtain retraction mechanism 10 also includes a drive component. The drive component includes, but is not limited to, a motor, cylinder, or hydraulic cylinder. The drive component is connected to the linkage assembly 13. Specifically, the drive component includes, but is not limited to, being connected to at least one of the first sliding member 134, the first connecting rod 131, the second connecting rod 132, and the third connecting rod 133, all of which can drive the linkage assembly 13 to move, thereby enabling the movement of the second support member 12 without manual operation, resulting in a high degree of automation.

[0061] In this embodiment, to facilitate the movement of the linkage assembly 13, the driving member is specifically connected to the first sliding member 134, for example. The driving member drives the first sliding member 134 to slide along the length direction of the first support member 11. Compared to the rotational motion of the first link 131, the second link 132, or the third link 133, the first sliding member 134 moves in a linear reciprocating motion. Therefore, by connecting the driving member to the first sliding member 134 and driving the first sliding member 134 to reciprocate, the movement of the linkage assembly 13 can be achieved, resulting in stable and reliable operation.

[0062] Based on the aforementioned embodiments, the curtain retraction mechanism 10 also includes a transmission component. The transmission component includes, but is not limited to, a pull cord. The drive component is connected to the first sliding member 134 via the transmission component. Compared to a direct connection between the drive component and the first sliding member 134, the presence of a transmission component between them allows for more flexible installation of the drive component, which can be placed, but is not limited to, on the handpiece, the first support member 11, or other components within the vehicle. Furthermore, by flexibly adjusting and controlling the installation position of the drive component, the space occupied by the curtain retraction mechanism 10 within the vehicle when not in operation can be reduced, meeting the compactness requirements of the vehicle's interior space layout.

[0063] Please see Figure 1In some embodiments, the first support member 11 is provided with a first sliding portion extending along its length. A first sliding member 134 is slidably disposed within the first sliding portion. Optionally, the first sliding portion may specifically be, for example, a groove 111, in which the first sliding member 134 is slidably disposed. The first sliding member 134 and the groove 111 can be precisely engaged, maintaining transmission accuracy even after long-term use. Optionally, the first sliding member 134 may include, but is not limited to, a slider.

[0064] Of course, in other embodiments, the first sliding part can also be configured as a slide rail, and the first sliding member 134 is slidably disposed on the slide rail.

[0065] Please continue reading. Figure 1 Similarly, the second support member 12 is provided with a second sliding portion extending along its length. The second end and the sixth end are each slidably disposed on the second sliding portion. The second sliding portion includes, but is not limited to, a groove or a slide rail.

[0066] Please see Figure 1 For example, the curtain retraction mechanism also includes a second slider 112. The second slider 112 is, but is not limited to, disposed at the bottom end of the first support member 11. The second slider 112 is, but is not limited to, a slider. The second slider 112 is connected to the first support member 11. The fifth end 1331 is connected to the second slider 112. Specifically, the fifth end 1331 and the second slider 112 are hinged. That is, the fifth end 1331 and the first support member 11 are indirectly connected. Of course, the second slider 112 may not be necessary, in which case the fifth end 1331 and the first support member 11 are directly connected.

[0067] Since a second sliding member 112 is provided on the first support member 11, the second sliding member 112 can be either fixedly disposed on the first support member 11 or slidably disposed along the length direction of the first support member 11, which is not limited here. When the second sliding member 112 is fixedly disposed on the first support member 11, the fifth end 1331 can only rotate relative to the first support member 11, but cannot move relative to the first support member 11; when the second sliding member 112 can slide along the first support member 11, the fifth end 1331 can not only rotate relative to the first support member 11, but also slide relative to the first support member 11.

[0068] In this embodiment, to reduce friction and improve noise reduction during the operation of the curtain retraction mechanism 10, ball bearings are installed at each hinge position of the curtain retraction mechanism 10, and the hinges are achieved using ball bearings. Specifically, the first sliding member 134 is equipped with a first ball bearing and a second ball bearing, with the first end 1311 connected to the first ball bearing and the third end 1321 connected to the second ball bearing. The third connecting rod 133 is equipped with a third ball bearing, with the fourth end 1322 connected to the third ball bearing. The first support member 11 is equipped with a fourth ball bearing, with the fifth end 1331 connected to the fourth ball bearing. It can be understood that when the first support member 11 is equipped with a second sliding member 112, the fourth ball bearing is correspondingly installed on the second sliding member 112. In this way, the curtain retraction mechanism 10 has low friction and good noise reduction during operation, thus improving product performance.

[0069] In some embodiments, the curtain retraction mechanism 10 further includes a first guide rail. A second support member 12 is slidably disposed on the first guide rail. The first guide rail is located at the top of the first support member 11 and the second support member 12. Specifically, the top end of the second support member 12 is connected to the first guide rail and can slide along the first guide rail. The first guide rail not only suspends and supports the second support member 12, but also guides the extension movement of the second support member 12, making the retraction and retraction of the second support member 12 more stable and reliable.

[0070] Based on the aforementioned embodiments, the first guide rail includes, but is not limited to, a connection to the opposing component. The opposing component serves to support and carry the first guide rail, ensuring that the first guide rail is stably installed inside the vehicle.

[0071] Optionally, the first guide rail and such Figure 1 The arc shape of the dashed line S1 is adapted to this. Thus, when the second support member 12 moves along the dashed line S1 under the drive of the linkage assembly 13, the first guide rail plays a good guiding role, making the retraction and extension of the second support member 12 stable and reliable.

[0072] Optionally, the first guide rail is disposed within the roof of the vehicle, and the top ends of both the first support member 11 and the second support member 12 extend into the roof of the vehicle. In this way, the roof covers the top ends of the first support member 11, the second support member 12, and the first guide rail, preventing them from being exposed and affecting the interior appearance of the vehicle. Furthermore, it reduces the space occupied by the curtain retraction mechanism 10 within the vehicle.

[0073] Please see Figure 1For example, when the second support member 12 is in the unfolded position, the first link 131 is parallel to the width direction W of the vehicle body. In other words, with the vehicle normally placed on a horizontal plane as a reference, the first link 131 is in a horizontal state. It should be noted that "parallel" in this embodiment is not strictly "parallel" in a mathematical sense, but only "parallel" as perceived by the naked eye, allowing for deviations within, for example, ±10°. Thus, with the link assembly 13 in the fully unfolded position, the length L1 of the first link 131 can be maximized to translate into the displacement of the second support member 12 along the width direction W of the vehicle body. The second support member 12 is correspondingly located furthest from the first support member 11, which optimizes the interior space layout.

[0074] For example, when the second support member 12 is in the unfolded position, the included angle between the second link 132 and the third link 133 is α, where 80°≤a≤100°. Specifically, α includes, but is not limited to, 80°, 82°, 85°, 88°, 90°, 92°, 95°, 98°, or 100°, and can be flexibly adjusted and set according to actual needs.

[0075] Please see Figure 1 and Figure 2 In some embodiments, the length of the first link 131 is set as L1, the length of the second link 132 is set as L2, and the length of the third link 133 is set as L3; wherein, L1:L2:L3 = (3.5~4.5):(2.5~3.5):(4.5~5.5). By setting L1, L2, and L3 according to this ratio, it can be ensured that the first link 131 is in a horizontal state when it moves to its extended limit position. Therefore, the length L1 of the first link 131 can be maximized to convert into the running distance of the second support member 12 along the vehicle width direction W, so that the second support member 12 is correspondingly located furthest from the first support member 11.

[0076] Specifically, when allocating L1, L2, and L3 according to the above proportional relationships, the number of parts for L1 includes, but is not limited to, 3.5, 3.9, 4, 4.1, 4.5, or any value between 3.5 and 4.5. The number of parts for L2 includes, but is not limited to, 2.5, 2.9, 3, 3.1, 3.5, or any value between 2.5 and 3.5. The number of parts for L3 includes, but is not limited to, 4.5, 4.9, 5, 5.1, 5.5, or any value between 4.5 and 5.5.

[0077] In one specific embodiment, L1:L2:L3 = 4:3:5.

[0078] Based on the aforementioned embodiments, the distance between the fourth end 1322 and the fifth end 1331 is set to L4, where L4:L3 = 0.2~0.6. Specifically, the ratio of L4 to L3 includes, but is not limited to, 0.2, 0.3, 0.32, 0.33, 0.34, 0.35, 0.36, 0.38, 0.4, or 0.6, etc., and can be flexibly adjusted and set according to actual needs. In one specific embodiment, L4:L3 = 1 / 3. In this way, during the curtain retraction and extension operation, the curtain retraction and extension mechanism 10 can satisfy the first link 131's movement from a vertical state to a horizontal state, that is, it can maximize the maximum angle and maximum horizontal displacement of the first link 131, thereby satisfying the rotational movement of the second support member 12.

[0079] Based on the aforementioned embodiment, the length of the second support member 12 is set as X, with the bottom end of the second support member 12 as the reference position, and the distance between the second end 1312 and the reference position is set as X1. When the second end 1312 moves along the second support member 12, X1 satisfies X1=0.45X~0.95X. The distance between the sixth end 1332 and the reference position is set as X2, and when the sixth end 1332 moves along the second support member 12, X2 satisfies X2=0.05X~0.55X. That is, when the second support member 12 is unfolded relative to the first support member 11, the second end 1312 and the sixth end 1332 are each in one of the extreme positions and are relatively close to the reference position, X1=0.45X, X2=0.05X, X1+X2=0.5X; when the second support member 12 is folded relative to the first support member 11, the second end 1312 and the sixth end 1332 are each in another extreme position and are relatively far from the reference position, X1=0.95, X2=0.55X, X1+X2=1.4X.

[0080] Based on the aforementioned embodiments, L1 = 200mm~240mm, specifically, for example, 200mm, 210mm, 220mm, 230mm, or 240mm. L2 = 150mm~190mm, specifically, for example, 150mm, 160mm, 170mm, 172mm, 180mm, or 190mm. L3 = 280mm~320mm, specifically, for example, 280mm, 290mm, 300mm, 310mm, or 320mm. The first end 1311 and the third end 1321 are respectively connected to the opposite ends of the first sliding member 134 along the sliding direction, and the length of the first sliding member 134 along the sliding direction is, for example, 40mm to 60mm, specifically, for example, 40mm, 45mm, 50mm, 55mm, or 60mm.

[0081] When the second support member 12 is in the unfolded position, the angle between the second support member 12 and the first support member 11 is, for example, 20° to 30°, specifically, 20°, 22°, 33°, 24°, 25°, 25.9°, 26°, 27°, 28°, or 30°. The distance between the second support member 12 and the first support member 11 is, for example, 100mm to 130mm, specifically, 100mm, 105mm, 110mm, 113mm, 115mm, 120mm, 125mm, or 130mm.

[0082] When the second support member 12 is in the folded position, the angle between the second support member 12 and the first support member 11 is, for example, 1° to 10°, specifically, 1°, 2°, 3°, 4°, 5°, 5.3°, 5.5°, 6°, 7°, 8°, 9°, or 10°. The distance between the second support member 12 and the first support member 11 is, for example, 0mm to 0.5mm, specifically, 0mm, 0.01mm, 0.02mm, 0.026mm, 0.03mm, 0.05mm, 0.07mm, or 0.5mm.

[0083] Please see Figure 1 and Figure 5 In another embodiment, this application also provides a projection screen device, including the screen unfolding mechanism 10 of any of the above embodiments, and a projection screen 20. The second support member 12 is provided with a second guide rail 121, and the edge of the projection screen 20 slides in cooperation with the second guide rail 121 to unfold or close.

[0084] The projection screen device described above includes a screen retraction mechanism 10. The technical effects are brought about by the screen retraction mechanism 10, and the beneficial effects include the beneficial effects of the screen retraction mechanism 10, which will not be elaborated here.

[0085] Based on the aforementioned embodiment, two screen retraction mechanisms 10 are provided, with the two screen retraction mechanisms 10 located on opposite sides of the projection screen 20 along the width direction W. It should be noted that, in order to make the structure clearer, Figure 5 The diagram only shows one screen retraction mechanism 10 connected to one edge of the projection screen 20; the other screen retraction mechanism 10 is similarly connected to the other edge of the projection screen 20. Figure 5 It is not shown in the middle.

[0086] The projection screen 20 slides on opposite sides of the screen along the width direction W, corresponding to two second guide rails 121. When the projection screen 20 needs to be lowered and unfolded, the second support members 12 of the screen unfolding mechanism 10 on both sides rotate to the unfolded position, so that the opposite edges of the projection screen 20 slide on the two second guide rails 121 to unfold or close, thus achieving stable unfolding of the projection screen 20.

[0087] The projection screen 20 is generally rectangular or square and descends from the roof of the vehicle. Since the projection screen 20 is typically housed within the roof, its width is generally the same as the width of the roof. However, the width of the vehicle interior is generally greater than the width of the roof, which can be understood as the cross-section of the vehicle body being trapezoidal.

[0088] To address the significant difference between the width of the vehicle interior and the width of the roof, before the projection screen 20 lowers, each of the second support members 12 rotates and unfolds towards the center of the vehicle body. When the second support members 12 are in the unfolded position, they are arranged parallel to each other and, for example, vertically, allowing each second support member 12 to correspond and engage with the side edges of the projection screen 20, thus enabling the projection screen 20 to open and close. The opening and closing direction of the projection screen 20 is as follows: Figure 5 As shown in H, it has the same guiding direction as the second guide rail 121.

[0089] Based on the aforementioned embodiment, the projection screen 20 has a winding shaft at one end along the opening / closing direction H, and a free end at the other end along the opening / closing direction H. The winding shaft is used to wind the projection screen 20 and is mounted on the ceiling. The free end has a pull rod. Each end of the pull rod has a third sliding member. Each third sliding member is slidably disposed corresponding to each second guide rail 121, and the second support member 12 can rotate to engage or disengage the second guide rail 121 with the third sliding member.

[0090] Specifically, when the projection screen 20 needs to be unfolded, the second support member 12 rotates to the unfolded position, and the second guide rail 121 engages with the third slider. After engaging with the second guide rail 121, the third slider can move under the guidance of the second guide rail 121, thereby driving the projection screen 20 to unroll. When the projection screen 20 needs to be rolled up, the roller winds around the projection screen 20, and the third slider moves along the second guide rail 121 to the top of the second guide rail 121. After the projection screen 20 is fully rolled up, the second support member 12 rotates from the unfolded position to the folded position, and the second guide rail 121 separates from the third slider.

[0091] In yet another embodiment, this application also provides a vehicle, the vehicle including a vehicle body and a projection screen device of any of the above embodiments, the projection screen device being disposed on any one side or opposite sides of the vehicle body along the width direction W.

[0092] The aforementioned means of transportation includes a curtain retraction mechanism 10. The technical effects are brought about by the curtain retraction mechanism 10, and the beneficial effects include the beneficial effects of the curtain retraction mechanism 10, which will not be elaborated here.

[0093] Based on the aforementioned embodiment, the vehicle body is provided with a counter-component, and the first support member 11 is disposed within the counter-component. When the second support member 12 is folded relative to the first support member 11, the second support member 12 moves into the counter-component. Thus, in the non-operating state, the first support member 11 and the second support member 12 are hidden, specifically located, for example, within the A-pillar or B-pillar, thereby not occupying interior space and meeting the compactness requirements of interior space arrangement.

[0094] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A curtain retraction and deployment mechanism, characterized in that, include: A first support member, the first support member being used for connection to a counterpart of a vehicle; The second support member is used to connect with the projection screen; and A linkage assembly is connected between the first support member and the second support member so that the second support member can be rotated, folded or unfolded relative to the first support member, and the rotation center point of the second support member is located outside the second support member, and is spaced apart from the top end of the second support member along the length direction of the second support member.

2. The curtain retraction and deployment mechanism according to claim 1, characterized in that, The linkage assembly includes: a first link, a second link, a third link, and a first sliding member; The first sliding member is slidably disposed on the first support member or the opponent member along the length direction of the first support member; The first connecting rod has a first end and a second end opposite to each other. The first end is connected to the first sliding member, and the second end is rotatably disposed on the second support member and can slide along the length direction of the second support member. The second connecting rod has a third end and a fourth end, the third end being connected to the first sliding member, and the fourth end being connected to the third connecting rod; The third link has a fifth end and a sixth end opposite to each other. The fifth end is connected to the first support member, and the sixth end is rotatably disposed on the second support member and can slide along the length direction of the second support member.

3. The curtain retraction and deployment mechanism according to claim 2, characterized in that, The curtain retraction mechanism also includes a second sliding member, which is connected to the first support member, and the fifth end is connected to the second sliding member.

4. The curtain retraction and deployment mechanism according to claim 2, characterized in that, The curtain retraction mechanism also includes a drive component, which is connected to the linkage assembly.

5. The curtain retraction and deployment mechanism according to claim 4, characterized in that, The driving member is connected to the first sliding member, and the driving member is used to drive the first sliding member to slide along the length direction of the first support member.

6. The curtain retraction and deployment mechanism according to claim 5, characterized in that, The curtain retraction mechanism also includes a transmission component, and the driving component is connected to the first sliding component through the transmission component; the driving component is used to be mounted on the opponent component or the first support component.

7. The curtain retraction and deployment mechanism according to claim 2, characterized in that, The first support member is provided with a first sliding portion extending along its length direction, and the first sliding member is slidably disposed on the first sliding portion.

8. The curtain retraction and deployment mechanism according to claim 2, characterized in that, The second support member is provided with a second sliding portion extending along its length direction, and the second end and the sixth end are slidably disposed on the second sliding portion.

9. The curtain retraction and deployment mechanism according to claim 2, characterized in that, The first sliding member is provided with a first ball bearing and a second ball bearing, the first end is connected to the first ball bearing, and the third end is connected to the second ball bearing; the third connecting rod is provided with a third ball bearing, and the fourth end is connected to the third ball bearing; the first support member is provided with a fourth ball bearing, and the fifth end is connected to the fourth ball bearing.

10. The curtain retraction and deployment mechanism according to claim 2, characterized in that, The curtain retraction mechanism further includes a first guide rail for connecting to the opposing member; the second support member is slidably disposed on the first guide rail, and the first guide rail is located on top of the first support member and the second support member.

11. The curtain retraction and deployment mechanism according to claim 2, characterized in that, The angle between the second link and the third link is α, where 80°≤α≤100°.

12. The curtain retraction and deployment mechanism according to claim 2, characterized in that, The length of the first link is set as L1, the length of the second link is set as L2, and the length of the third link is set as L3; wherein, L1:L2:L3 = (3.5~4.5):(2.5~3.5):(4.5~5.5).

13. The curtain retraction and deployment mechanism according to claim 12, characterized in that, The distance between the fourth end and the fifth end is set as L4, where L4:L3 = 0.2~0.

6.

14. The curtain retraction and deployment mechanism according to claim 12, characterized in that, When the second end moves along the second support member, it satisfies the following condition: X1 = 0.45X ~ 0.95X; When the sixth end moves along the second support member, it satisfies the following condition: X2 = 0.05X ~ 0.55X; When the second support member is deployed relative to the first support member, the following conditions are met: the second end and the sixth end are each in one of the extreme positions, X1=0.45X, X2=0.05X, X1+X2=0.5X; When the second support member is folded relative to the first support member, the following conditions are met: the second end and the sixth end are each in another extreme position, X1=0.95, X2=0.55X, X1+X2=1.4X; Where X is the length of the second support member, the bottom end of the second support member is the reference position, X1 is the distance between the second end and the reference position, and X2 is the distance between the sixth end and the reference position.

15. A projection screen device, characterized in that, The device includes the screen unfolding mechanism as described in any one of claims 1 to 14, and further includes a projection screen, wherein the second support member is provided with a second guide rail, and the edge of the projection screen slides in cooperation with the second guide rail to unfold or close.

16. The projection screen device according to claim 15, characterized in that, The projection screen retraction mechanism is provided in two parts, which are located on opposite sides of the projection screen along the width direction. The opposite sides of the projection screen along the width direction are respectively slidably engaged with the two second guide rails.

17. The projection screen device according to claim 16, characterized in that, The projection screen has a winding shaft at one end along the opening and closing direction, and a free end at the other end along the opening and closing direction. The winding shaft is used to wind the projection screen and is set on the opponent. The free end has a pull rod, and each end of the pull rod has a third sliding member. Each of the third sliding members is slidably arranged with each of the second guide rails. The second support member can drive the second guide rails to engage or disengage with the third sliding members by rotation.

18. A means of transportation, characterized in that, The vehicle includes a vehicle body and a projection screen device as described in any one of claims 15 to 17; the vehicle body is provided with a counter member, the first support member is disposed within the counter member, and when the second support member is rotated and folded with the first support member, the second support member moves into the counter member.

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