Curtain device and vehicle

Abstract

Disclosed in the present application are a curtain device and a vehicle. The curtain device comprises a roller assembly (100), a curtain assembly (200) and a support rod assembly (300), wherein the roller assembly (100) comprises a roller body (110); the curtain assembly (200) comprises a curtain body (210) and a pull rod (220), the curtain body (210) comprising a first side edge (211) and a second side edge (212), which are arranged opposite each other, the first side edge (211) being connected to the roller body (110), and the second side edge (212) being connected to the pull rod (220); one end of the support rod assembly (300) abuts against the roller assembly (100), and the other end of the support rod assembly (300) abuts against the pull rod (220); the support rod assembly (300) can be driven to extend, so as to drive the curtain body (210) to unfold in a first direction, and the roller body (110) can be driven to rotate, so as to drive the curtain body (210) to roll up; and in the unfolded state of the curtain body (210), tension forces exerted on two end sides of a curtain in the first direction are greater than a tension force exerted on the middle thereof.

Description

A curtain device and a vehicle

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202411264779.8, filed on September 10, 2024, and entitled "A curtain device and a vehicle", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to, but is not limited to, the technical field of projection curtain, and in particular to a curtain device and a vehicle. BACKGROUND

[0004] The projection curtain usually adopts an upper roller and a lower pull rod to tighten the curtain, but when applied in a vehicle, the left and right edges of the curtain without constraints will appear undulating waves along the front and rear directions of the vehicle. To this end, part of the curtain devices in the related art solve the above problem by bonding a side strip to the non-projection surface of the left and right edges of the curtain, but this improvement increases the thickness of the curtain, thereby increasing the diameter of the roller after being rolled up, resulting in an increase in the space required for the entire screen arrangement; in addition, even if the side strip is bonded to the projection back surface, it also affects the appearance. Another part of the curtain devices in the related art solves the above problem by using a hot pressing or ultrasonic pressing process for bonding, but this way damages the appearance of the projection curtain. In addition, another part of the curtain devices in the related art solves the above problem by embedding a fine wire in a sandwich manner at the left and right edges of the curtain, but this also increases the thickness of the curtain, or if a sewing process is used, the sewing line also affects the appearance. SUMMARY

[0005] The following is a summary of the subject matter of the detailed description herein. This summary is not intended to limit the scope of the claims.

[0006] To this end, the present application solves the problem of the left and right edges of the curtain being rolled up as much as possible after the curtain is unfolded without causing the new problem of increasing the space occupation or other appearance problems, by making the first direction tension force received by the two end sides of the curtain body in the second direction greater than that received by the middle side when the curtain body is unfolded.

[0007] According to the curtain device of the first aspect of the present application, the curtain device comprises:

[0008] The roller assembly comprises a roller body;

[0009] The curtain assembly comprises a curtain body and a pull rod, the curtain body comprises a first side edge and a second side edge arranged oppositely, the first side edge is connected to the roller body, and the second side edge is connected to the pull rod;

[0010] at least one support rod assembly, one end of the support rod assembly abutting the reel assembly, the other end of the support rod assembly abutting the pull rod;

[0011] wherein the support rod assembly is driven to open to drive the curtain body to expand in the first direction, and the reel body is driven to rotate to drive the curtain body to be reeled in.

[0012] and, in the state that the curtain body is expanded, the first direction tension force received by the two end sides of the curtain body in the second direction is greater than that received by the middle side of the curtain body in the first direction, the second direction being perpendicular to the first direction.

[0013] The curtain device according to the first aspect of the present application has at least the following beneficial effects: the curtain body can be smoothly expanded and reeled in through the arrangement of the reel body and the support rod assembly, and the problem of the left and right edges of the curtain being rolled up after the curtain is expanded can be solved as much as possible without causing the problem of increased space occupation or other appearance defects.

[0014] The curtain device according to the first aspect of the present application, one surface of the curtain body is a projection surface, and the other surface is a back surface, and the support rod assembly is arranged on the back surface of the curtain body.

[0015] The curtain device according to the first aspect of the present application, in the state that the curtain body is not assembled to the curtain device, the first side edge comprises a first transition section located at the two ends in the second direction and a first straight section located between the two ends, the first transition section is closer to the second side edge relative to the first straight section, and / or,

[0016] the second side edge comprises a second transition section located at the two ends in the second direction and a second straight section located between the two ends, the second transition section is closer to the first side edge relative to the second straight section.

[0017] The curtain device according to the first aspect of the present application, in the state that the curtain body is assembled to the curtain device, each first transition section is taut to be flush with the first straight section and connected to the circumferential side wall of the reel body, and / or,

[0018] each second transition section is taut to be flush with the second straight section and connected to the circumferential side wall of the pull rod.

[0019] The curtain device according to the first aspect of the present application, the first side edge further comprises a first fitting portion, in the state that the first side edge is connected to the reel body, the two ends of the first fitting portion are taut to be flush with each other and connected to the circumferential side wall of the reel body.

[0020] According to the curtain device of the first aspect of the present application, the curtain assembly further comprises a backing plate and a connecting piece, the backing plate is provided with a mounting groove and a mounting hole in communication with the mounting groove, the pull rod is assembled with the backing plate by embedding into the mounting groove, the second side edge is arranged between the circumferential side wall of the pull rod and the mounting groove, and the connecting piece is arranged in the mounting hole and used for fixedly connecting the second side edge, the pull rod and the backing plate.

[0021] According to the curtain device of the first aspect of the present application, when the second side edge is connected to the pull rod, the second side edge is sequentially fitted to each side surface of the pull rod mounted in the mounting groove.

[0022] According to the curtain device of the first aspect of the present application, the second side edge further comprises a plurality of second fitting portions arranged in sequence along the second side edge to the first side edge, and in the state that the pull rod is assembled to the backing plate, two ends of the second fitting portion are tightly fitted to each other and to one of the side walls of the pull rod.

[0023] According to the curtain device of the first aspect of the present application, each of the second fitting portions is arranged between the mounting groove and each of the side walls of the pull rod.

[0024] According to the curtain device of the first aspect of the present application, the curtain device further comprises a first driving assembly and a second driving assembly, the first driving assembly is arranged on the reel assembly and used for driving the supporting rod assembly, the second driving assembly is arranged in the reel assembly and used for driving the reel body, and the first driving assembly and the second driving assembly are arranged in linkage, so that when the reel body actively outputs a force, the supporting rod assembly follows, or when the supporting rod assembly actively outputs a force, the reel body follows.

[0025] According to the curtain device of the first aspect of the present application, the reel assembly comprises a housing and a transmission assembly, the first driving assembly is arranged on the housing, and the reel body and the second driving assembly are arranged in the housing and connected through the transmission assembly.

[0026] According to the curtain device of the first aspect of the present application, when the curtain body is unfolded, the first driving assembly is configured to be self-locked after the curtain body is unfolded in place, and the second driving assembly is configured to reverse action for a preset time after the curtain body is unfolded in place, so that the second driving assembly can provide a tensioning force to the curtain body.

[0027] And / or

[0028] When the curtain body is rolled up, the first driving assembly is configured to be self-locked after the curtain body is rolled up to the position, and the second driving assembly is configured to continue the same direction action for a preset time after the curtain body is rolled up to the position, so that the second driving assembly can provide a tension force to the curtain body.

[0029] According to the curtain device in the first aspect of the present application, the support rod assembly includes a joint part, a first support rod and a second support rod, one end of the first support rod is connected with the first driving assembly, one end of the second support rod is hinged with the pull rod, the other end of the first support rod and the other end of the second support rod are hinged through the joint part; and / or,

[0030] The support rod assembly is provided at least two, the number of the support rod assemblies corresponds to the number of the first driving assemblies, and each of the support rod assemblies is arranged in the second direction.

[0031] According to the curtain device in the first aspect of the present application, the abutment point position of the one end of the second support rod hinged with the pull rod is less than 2 cm from the intersection point of the second transition section and the second straight section in the second direction.

[0032] According to the vehicle in the second aspect of the present application, the curtain device in the first aspect of the present application is included.

[0033] It is not difficult to understand that the vehicle in the second aspect of the present application has the technical effects of the curtain device in the first aspect of the present application, and thus will not be described again.

[0034] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0035] The present application will be further described below in conjunction with the drawings and embodiments;

[0036] Fig. 1 is a front view of an embodiment of the present application;

[0037] Fig. 2 is a rear view of an embodiment of the present application;

[0038] Fig. 3 is a sectional view of A-A in Fig. 1;

[0039] Fig. 4 is a sectional view of B-B in Fig. 3;

[0040] Fig. 5 is an enlarged view of C in Fig. 3;

[0041] Fig. 6 is a sectional view of E-E in Fig. 5;

[0042] Fig. 7 is an enlarged view of F in Fig. 6;

[0043] Fig. 8 is an enlarged view of D in Fig. 3;

[0044] Fig. 9 is a sectional view of G-G in Fig. 8;

[0045] Fig. 10 is an enlarged view of H in Fig. 9;

[0046] Fig. 11 is a schematic view of a first side edge of a curtain body in an embodiment of the present application;

[0047] Fig. 12 is a schematic view of a second side edge of a curtain body in an embodiment of the present application;

[0048] Fig. 13 is a stress curve comparison diagram of a curtain body in an embodiment of the present application and a curtain in the related art.

[0049] Fig. 13 is a stress curve comparison diagram of a curtain body in an embodiment of the present application and a curtain in the related art. DETAILED DESCRIPTION

[0050] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The same or similar components are denoted by the same or similar reference numerals throughout the drawings, and a repeated description of the same or similar components is omitted. The embodiments described below are examples for explaining the present application, and should not be understood as limiting the present application.

[0051] In the description of the present application, it should be understood that, in relation to the orientation description, the orientation or position relationship indicated by the orientation or position relationship shown in the drawings, such as up, down, front, back, left, right, etc. is for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0052] In the description of the present application, the meaning of one or more is one or more, the meaning of multiple is at least two, greater than, less than, more than, etc. is not included in the number, above, below, etc. is understood to include the number. If the first, second is described, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0053] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0054] Referring to FIGS. 1-13, the curtain device of the first aspect embodiment of the present application includes a reel assembly 100, a curtain assembly 200, and a support rod assembly 300.

[0055] The reel assembly 100 includes a reel body 110; the curtain assembly 200 includes a curtain body 210 and a pull rod 220, the curtain body 210 includes oppositely arranged first and second side edges 211 and 212, the first side edge 211 is connected to the reel body 110, and the second side edge 212 is connected to the pull rod 220; the support rod assembly 300 is provided at least one, one end of the support rod assembly 300 abuts the reel assembly 100, and the other end abuts the pull rod 220; wherein the support rod assembly 300 can be driven to open to drive the curtain body 210 to expand in a first direction, and the reel body 110 can be driven to rotate to drive the curtain body 210 to be wound; and, when the curtain body 210 is in an expanded state, the first direction tension on both end sides of the curtain body 210 in a second direction is greater than that on the middle side, and the second direction is perpendicular to the first direction.

[0056] It should be noted that by applying different tension forces to the both end sides and the middle side of the curtain body 210, the both sides of the curtain body 210 can be effectively tightened and the occurrence of the edge rolling effect can be reduced. When the second direction is the horizontal direction, a greater tension force is applied to the left and right sides of the curtain body 210 than to the middle position, so that the left and right edges of the curtain can be better tightened to eliminate the edge rolling. It can be understood that applying a tension force to at least one of the first side edge 211 or the second side edge 212 can achieve the effect that the first direction tension on both end sides is greater than that on the middle side.

[0057] In some embodiments, the effect that the two end sides of the curtain body 210 are subjected to greater first direction tension than the middle side can be achieved by adjusting the installation method. For example, the first side edge 211 and / or the second side edge 212 of the curtain body 210 can be folded, rolled up or stretched tight before being fixedly connected, and the middle side of the curtain body 210 is normally installed, so that the two end sides are subjected to greater first direction tension than the middle side.

[0058] In some embodiments, since the first side edge 211 of the curtain body 210 is connected to the roller body 110, and the second side edge 212 is connected to the pull rod 220, the effect that the two end sides of the curtain body 210 are subjected to greater first direction tension than the middle side can be achieved by additionally providing a structure to act on the first side edge 211 and / or the second side edge 212. For example, a tension member is provided at the two end positions of the first side edge 211 to provide tension and achieve stretching or stretching tightness before being fixedly connected, and the middle side of the curtain body 210 is normally installed. For example, a tension member or a counterweight member can also be provided at the two end positions of the second side edge 212 to provide tension and achieve stretching or stretching tightness before being fixedly connected, and the middle side of the curtain body 210 is normally installed, so that the two end sides are subjected to greater first direction tension than the middle side.

[0059] It can be understood that the curtain body 210 is connected to the roller body 110 at the first side edge 211, so that the roller body 110 rotates correspondingly when the curtain body 210 is rolled up and expanded, and the second side edge 212 is driven to move along the first direction in the process, wherein the pull rod 220 on the second side edge 212 is used to increase the weight and limit the position of the second side edge 212, so that the curtain body 210 can be smoothly lowered and normal use is ensured, and the pull rod 220 cooperates with the first direction tension of the two end sides of the curtain body 210 along the second direction to better stretch the left and right edges of the curtain.

[0060] In some embodiments, referring to FIG. 2, one surface of the curtain body 210 is a projection surface, and the other surface is a back surface. The support rod assembly 300 is arranged on the back surface of the curtain body 210 and is arranged on the roller assembly 100 at one end, and is driven based on the end to drive the other end to expand or retract, wherein the other end of the support rod assembly 300 is connected to the pull rod 220, so that the support rod assembly 300 can drive the pull rod 220 to expand the curtain body 210 along the first direction. In other embodiments, the support rod assembly 300 is arranged on the projection surface of the curtain body 210 but does not block the projection area, and the curtain body 210 can be normally used.

[0061] In some embodiments, the curtain body 210 is synchronously linked with the support rod assembly 300 and the reel body 110 when the curtain body 210 is deployed or retracted, for example, when the support rod assembly 300 is driven to expand and drive the curtain body 210 to deploy in the first direction, the reel body 110 is not actively driven to provide force but is rotated with the curtain body 210, and when the reel body 110 is driven to rotate and drive the curtain body 210 to retract, the support rod assembly 300 is not actively driven to provide force but is retracted with the curtain body 210. In some embodiments, the expansion and retraction of the support rod assembly 300 can be achieved by swinging, and the support rod assembly 300 can be a linkage structure assembly. In other embodiments, the expansion and retraction of the support rod assembly 300 can be achieved by stretching and retracting, and the support rod assembly 300 can be a telescopic structure assembly. The structure of the support rod assembly 300 can be adjusted adaptively according to actual conditions without changing the setting mode.

[0062] In some embodiments, the curtain body 210 is deployed and retracted in the vertical direction, and the first direction is the vertical direction, and the second direction is the horizontal direction, and the front-rear direction of the vehicle is the normal direction of the curtain. In other embodiments, the first direction, the second direction, and the normal direction of the curtain can be adjusted according to different application scenarios, and the direction of the deployment and retraction of the curtain body 210 can also be adjusted correspondingly in different application scenarios.

[0063] Referring to FIGS. 1-13, the curtain device of the first aspect embodiment of the present application is configured by the reel body 110 and the support rod assembly 300, so that the curtain body 210 can be deployed and retracted smoothly. By making the first direction tension force received by the two end sides of the curtain in the second direction greater than the first direction tension force received by the middle side, the left and right edge curling problem of the curtain after deployment can be solved as much as possible without causing the problem of increased space occupation or other appearance defects.

[0064] In some embodiments of the present application, when the curtain body 210 is not assembled to the curtain device, the first side edge 211 includes a first transition section 2111 located at the two ends in the second direction and a first straight section 2112 located between the two ends, and the first transition section 2111 is closer to the second side edge 212 than the first straight section 2112, and / or the second side edge 212 includes a second transition section 2121 located at the two ends in the second direction and a second straight section 2122 located between the two ends, and the second transition section 2121 is closer to the first side edge 211 than the second straight section 2122.

[0065] It can be understood that, in the state that the curtain body 210 is not assembled to the curtain device, the first side edge 211 includes first transition sections 2111 located at both ends along the second direction and a first straight section 2112 located between the two ends, the first transition section 2111 is closer to the second side edge 212 relative to the first straight section 2112, the central region of the first side edge 211 is a straight section, and the transition sections at both ends are gradient curves or gradient straight sections, so that, when being installed on the reel body, the first side edge 211 is taut by the limiting tension of the reel body, and the taut effect is achieved.

[0066] It can be understood that, in the state that the curtain body 210 is not assembled to the curtain device, the second side edge 212 includes second transition sections 2121 located at both ends along the second direction and a second straight section 2122 located between the two ends, the second transition section 2121 is closer to the first side edge 211 relative to the second straight section 2122, the central region of the second side edge 212 is a straight section, and the transition sections at both ends are gradient curves or gradient straight sections, so that, when being installed on the pull rod 220, the second side edge 212 is taut by the limiting tension of the pull rod 220, and the taut effect is achieved.

[0067] In some embodiments of the present application, in the state that the curtain body 210 is assembled to the curtain device, each first transition section 2111 is taut to be flush with the first straight section 2112 and connected to the circumferential side wall of the reel body 110, and / or each second transition section 2121 is taut to be flush with the second straight section 2122 and connected to the circumferential side wall of the pull rod 220.

[0068] It can be understood that, in the state that the curtain body 210 is assembled to the curtain device, each first transition section 2111 is taut to be flush with the first straight section 2112 and connected to the circumferential side wall of the reel body 110, so that the stress on the first transition section 2111 and the first straight section 2112 is more stable when the reel body 110 rotates, wherein the first transition section 2111 is taut to be flush with the first straight section 2112 and then connected to the circumferential side wall of the reel body 110 in parallel to the axial direction of the reel body 110, the first transition section 2111 and the first straight section 2112 are driven to move synchronously based on the columnar structure characteristics of the reel body, and the stress on the first transition section 2111 and the first straight section 2112 is ensured to be constant after being fixed.

[0069] In some embodiments, referring to FIGS. 6 and 7, the upper edge of the curtain is located at the dashed line position before being fixed and is located at the solid line position after being fixed and is on the same horizontal line as the first straight section 2112, and the first side edge 211 of the curtain rotates x turns around the reel body when being connected to the reel body, and the value range of x is usually 0.5-1.5.

[0070] In some embodiments, the projection curtain is fixedly connected to the reel body in a bonded manner, or can also be fixedly connected to the reel body by other commonly used detachable or non-detachable connection manners.

[0071] It can be understood that in the state that the curtain body 210 is assembled to the curtain device, each second transition section 2121 is taut to be flush with the second straight section 2122 and connected to the circumferential side wall of the pull rod 220, so that the stress of the second transition section 2121 and the second straight section 2122 is more balanced, wherein the second transition section 2121 is taut to be flush with the second straight section 2122 and connected to the side wall of the pull rod 220 in parallel to the length direction of the pull rod 220, so that the stress is constant in the process that the support rod assembly 300 drives the pull rod 220 to move and synchronously drives the first transition section 2111 and the first straight section 2112 to move.

[0072] In some embodiments, referring to FIGS. 9 and 10, the lower edge of the curtain is fixed at the dashed line position before being fixed and is fixed at the solid line position and is at the same horizontal line as the second straight section 2122, further, referring to FIG. 12, when the second side edge 212 of the curtain is connected to the pull rod 220, each side surface of the pull rod 220 installed in the installation groove 231 is sequentially fitted, so that the second transition section 2121 located on each side surface is in a taut state.

[0073] It should be noted that the blank shape of the curtain body 210 before being fixed is specially cut and fixed according to a special process, so that the curtain connected to both ends of the reel body or the curtain connected to both ends of the pull rod 220 has a length slightly shorter than the middle part in the vertical direction in the free state (before being taut), so that the tension of both ends of the curtain in the unfolded state (after being taut) is obviously greater than that of the middle part, thereby tautening the left and right edges of the curtain and eliminating the curling. Through the solution of specially cutting the blank shape of the curtain body 210 before being fixed, i.e., eliminating the curling, the problem of curling of the left and right edges after being unfolded is solved without causing new problems of increasing space occupation or other appearance defects.

[0074] In some embodiments of the present application, the first side edge 211 further comprises a first fitting part 2113, and in the state that the first side edge 211 is connected to the reel body 110, both ends of the first fitting part 2113 are taut to be flush with each other and connected to the circumferential side wall of the reel body 110.

[0075] It can be understood that the first fitting part 2113 is used to be fixedly connected to the circumferential side wall of the reel body 110, and in the connection, both ends of the first fitting part 2113 are taut and then fitted to the circumferential side wall of the reel body 110, so as to achieve the effect of tautening the left and right sides of the curtain and eliminating the curling.

[0076] In some embodiments, referring to FIG. 11, the circumferential side wall of the reel body 110 is a continuous curved surface, and thus the first fitting section 2113 of a section is arranged in the same structure as the first side edge 211 and is fitted to the circumferential side wall of the reel body 110 to achieve the connection effect.

[0077] In some embodiments of the present application, the curtain assembly 200 further comprises a backing plate 230 and a connecting piece, the backing plate 230 is formed with a mounting groove 231 and a mounting hole 232 communicating with the mounting groove 231, the pull rod 220 is assembled with the backing plate 230 by being embedded in the mounting groove 231, the second side edge 212 is arranged between the circumferential side wall of the pull rod 220 and the mounting groove 231, and the connecting piece is arranged in the mounting hole 232 and is used to fixedly connect the second side edge 212, the pull rod 220 and the backing plate 230.

[0078] It can be understood that the curtain is fixedly connected to the reel body upward and is fixedly connected to the pull rod 220 downward, the second side edge 212 of the curtain body 210 is wrapped around the pull rod 220 before connection, and the pull rod 220 is further embedded in the mounting groove 231 of the backing plate 230 and is fixedly connected through the connecting piece, so that the second side edge 212 is located between the mounting groove 231 and the pull rod 220 after assembly, which is beneficial to maintaining the tensioning effect.

[0079] In some embodiments, the mounting groove 231 can be a mounting groove 231 for snap connection, and the pull rod 220 is embedded in the mounting groove 231 by snap connection. In some embodiments, a plurality of mounting holes 232 are arranged on the mounting groove 231 along the extension direction of the pull rod 220, and a hole position is also arranged at the corresponding position of the pull rod 220, and a plurality of connecting pieces are arranged on each mounting hole 232 and the hole position respectively, so as to ensure the connection effect by arranging a plurality of connecting pieces. In some embodiments, the connecting piece is a threaded fastener, a buckle or other commonly used connecting piece.

[0080] In some embodiments of the present application, the second side edge 212 further comprises a plurality of second fitting sections 2123 arranged in sequence along the direction from the second side edge 212 to the first side edge 211, and in the state that the pull rod 220 is assembled to the backing plate 230, the two ends of the second fitting section 2123 are tensioned to be flush with each other and are fitted to one of the side walls of the pull rod 220.

[0081] It can be understood that each second fitting section 2123 is arranged between the mounting groove 231 and each side wall of the pull rod 220, and the tensioning adjustment operation of each second fitting section 2123 during connection can be independently and sequentially performed, so as to ensure the connection and tensioning effect.

[0082] In some embodiments, referring to FIG. 12, the pull rod 220 has a plurality of sequentially adjacent side walls, and the second fitting part 2123 is arranged in each side wall to provide a certain tension at both ends of the second fitting part 2123. The second fitting part 2123 is arranged as a structure with a straight line segment in the middle and a gradually changing curve segment or a gradually changing straight line segment at both ends, so that the second side edge 212 is tightly stretched by the limiting tension of the pull rod 220 when the pull rod 220 is installed.

[0083] In some embodiments, the first transition section 2111 and the second transition section 2121 are formed by cutting, and the height difference of the cutting in the transition region, i.e., h of the upper edge of the projection curtain and n of the lower edge of the projection curtain, determines the effect of increasing the tension of the left and right curtain edges. Assuming that the elongation of the "central region" when being stretched is δ, it is required that (h+n+δ) / H<the limit elongation rate under the elastic deformation of the curtain (exceeding which will cause yield permanent deformation; wherein H is the length before the "central region" is stretched. Referring to FIG. 13, the stress curves of the embodiment and the prior art curtain are compared.

[0084] In some embodiments of the present application, the curtain device further comprises a first driving assembly 400 and a second driving assembly 500. The first driving assembly 400 is arranged on the reel assembly 100 and used to drive the support rod assembly 300. The second driving assembly 500 is arranged in the reel assembly 100 and used to drive the reel body 110. The first driving assembly 400 and the second driving assembly 500 are arranged in linkage to make the support rod assembly 300 follow when the reel body 110 actively outputs a force, or make the reel body 110 follow when the support rod assembly 300 actively outputs a force.

[0085] It can be understood that the first driving assembly 400 can be used to drive the support rod assembly 300 to drive the curtain body 210 to be unfolded, and the support rod assembly 300 and the first driving assembly 400 follow when the reel body 110 drives the curtain body 210 to be rolled up. Similarly, the second driving assembly 500 can be used to drive the reel body 110 to rotate to drive the curtain body 210 to be rolled up, and the reel body 110 and the second driving assembly 500 follow when the curtain body 210 is unfolded. The linkage of the first driving assembly 400 and the second driving assembly 500 improves the control accuracy of the curtain body 210.

[0086] In some embodiments of the present application, when the curtain body 210 is unrolled, the first drive assembly 400 is configured to be self-locked after the curtain body 210 is unrolled to the position, and the second drive assembly 500 is configured to reverse for a preset time after the curtain body 210 is unrolled to the position, so that the second drive assembly 500 can provide tension to the curtain body 210; and / or when the curtain body 210 is rolled up, the first drive assembly 400 is configured to be self-locked after the curtain body 210 is rolled up to the position, and the second drive assembly 500 is configured to continue to act in the same direction for a preset time after the curtain body 210 is rolled up to the position, so that the second drive assembly 500 can provide tension to the curtain body 210.

[0087] It can be understood that when the curtain body 210 is unrolled, the first drive assembly 400 is configured to be self-locked after the curtain body 210 is unrolled to the position, and the second drive assembly 500 is configured to reverse for a preset time after the curtain body 210 is unrolled to the position, so that the second drive assembly 500 can provide tension to the curtain body 210,

[0088] It can be understood that when the curtain body 210 is rolled up, the first drive assembly 400 is configured to be self-locked after the curtain body 210 is rolled up to the position, and the second drive assembly 500 is configured to continue to act in the same direction for a preset time after the curtain body 210 is rolled up to the position, so that the second drive assembly 500 can provide tension to the curtain body 210.

[0089] In some embodiments, the first drive assembly 400 and the support rod assembly 300 form a telescopic mechanism, and the second drive assembly 500, the reel body, and the transmission assembly 130 form a rolling mechanism.

[0090] The control method of the rolling mechanism includes:

[0091] The "active rolling" process: the rolling motor drives the transmission assembly 130, the transmission assembly 130 drives the reel body to rotate, and the reel body retracts the projection curtain. The reason for calling "active" is that the rolling motor actively outputs force to the projection curtain during the curtain rolling process. During this process, the telescopic mechanism is in a linked state, the support rod joint is bent inward, and the support rod is folded. When the projection curtain is completely retracted, the telescopic motor is powered off first, and the rolling motor continues to apply a certain torque in the original (rolling curtain) rotation direction to make the projection curtain obtain a certain tension, and then the rolling motor is powered off. Since the motor has a self-locking function when powered off, it will not rotate, and the tension of the projection curtain can be maintained without relaxation.

[0092] The "passive releasing" process: the winding motor drives the transmission assembly 130, the transmission assembly 130 drives the rotation of the reel body, and the reel body releases the projection curtain. The reason for being called "passive" is that the winding motor does not output force to the projection curtain during the curtain releasing process - the release of the projection curtain relies on the force of the telescopic mechanism and gravity. During this process, the telescopic mechanism is in linkage state, the strut joint is outcurved, and the strut is opened. When the projection curtain is completely released, the telescopic motor is powered off first, and then the winding motor is powered off after applying a certain torque in the "reverse direction" of the original (releasing curtain) rotation direction to make the projection curtain obtain a certain tension. Since the motor has a power-off self-locking function, it will not rotate after power-off, and the tension of the projection curtain can be maintained without relaxation.

[0093] The control method of the telescopic mechanism includes:

[0094] The "active opening" process: the telescopic motor drives the transmission member, the transmission member drives the strut, and the strut unfolds the projection curtain. The reason for being called "active" is that the telescopic motor actively outputs force to the strut and then to the projection curtain during the strut opening process. The strut joint is outcurved, the strut is opened, and the projection curtain is unfolded. During this process, the winding mechanism is in linkage state. When the strut is completely opened and the projection curtain is completely unfolded, the telescopic motor is powered off first, and then the winding motor is powered off after applying a certain torque in the "reverse direction" of the original (releasing curtain) rotation direction to make the projection curtain obtain a certain tension. Since the motor has a power-off self-locking function, it will not rotate after power-off, and the tension of the projection curtain can be maintained without relaxation.

[0095] The "passive folding" process: the telescopic motor drives the transmission member, the transmission member drives the strut, and the strut folds with the recovery of the projection curtain. The reason for being called "passive" is that the telescopic motor does not actively output force to the strut and then to the projection curtain during the strut folding process. The strut joint is incurved, the strut is folded, and the process is a linkage folding process with the recovery of the projection curtain. When the strut is completely folded and the projection curtain is completely recovered, the telescopic motor is powered off first, and then the winding motor is powered off after applying a certain torque in the original (winding curtain) rotation direction to make the projection curtain obtain a certain tension. Since the motor has a power-off self-locking function, it will not rotate after power-off, and the tension of the projection curtain can be maintained without relaxation.

[0096] In some embodiments of the present application, the strut assembly 300 includes a joint portion 310, a first strut 320, and a second strut 330. One end of the first strut 320 is connected to the first driving assembly 400, one end of the second strut 330 is hinged to the pull rod 220, and the other end of the first strut 320 and the other end of the second strut 330 are hinged through the joint portion 310. And / or, the strut assembly 300 is provided with at least two, the number of the strut assembly 300 and the first driving assembly 400 corresponds, and each strut assembly 300 is arranged in the second direction.

[0097] It can be understood that, with reference to FIG. 2, the support rod assembly 300 includes a joint part 310, a first support rod 320 and a second support rod 330, one end of the first support rod 320 is connected with the first driving assembly 400, one end of the second support rod 330 is hinged with the pull rod 220, the other end of the first support rod 320 and the other end of the second support rod 330 are hinged through the joint part 310, the first driving assembly 400 drives the first support rod 320 to swing, the first support rod 320 drives the second support rod 330 to swing through the joint part 310, the first support rod 320 and the second support rod 330 are hinged to drive the pull rod 220 to move along the first direction, and the pull rod 220 is matched with the gravity to realize the unfolding effect of the curtain body 210.

[0098] It can be understood that, with reference to FIG. 2, the support rod assembly 300 is provided at least two, the number of the support rod assembly 300 and the first driving assembly 400 correspond, each support rod assembly 300 is arranged in the second direction, each support rod assembly 300 is arranged close to the left and right sides of the curtain body 210, so as to ensure the stable movement of the pull rod 220, and the effect of tightening the left and right sides of the curtain body 210 is realized, and the setting mode that the tension of the left and right sides of the curtain body 210 is greater than the middle side is matched, so that the effect of eliminating the edge curling is better.

[0099] In some embodiments, the abutting point position of one end of the second support rod 330 hinged with the pull rod 220 is within 2 cm from the intersection point of the second transition section 2121 and the second straight section 2122 in the second direction, the support is better, and the edge curling is prevented.

[0100] In some embodiments of the present application, with reference to FIG. 4, the reel assembly 100 includes a housing 120 and a transmission assembly 130, the first driving assembly 400 is arranged on the housing 120, and the reel body and the second driving assembly 500 are arranged in the housing 120 and connected through the transmission assembly 130. It can be understood that the housing 120 as a mounting base can be arranged at a suitable position, the housing 120 has a cavity for accommodating the reel body 110, the curtain body 210, the transmission assembly 130 and the second driving assembly 500 inside, and the housing 120 is provided with a mounting position for mounting the first driving assembly 400 outside, so that the overall layout is reasonable and the product size is reduced. The transmission assembly 130 plays a transmission role and drives the reel body to rotate, and a commonly used transmission assembly 130 can be selected for transmission according to actual needs.

[0101] In some embodiments of the present application, referring to FIGS. 1-12, the present application includes one or a set (two, one on the left and one on the right) of winding motors with power-off self-locking function, transmission assemblies 130 and reel bodies. Its function is to "actively wind" or "passively release" the projection screen; and to provide tension to tighten the projection screen after the support rod and the screen stop moving. The present application includes one or a set (two, one on the left and one on the right) of telescopic motors with power-off self-locking function, transmission assemblies 130 and support rod assemblies 300. Its function is to "actively open" or "passively fold" the support rod; after the support rod and the screen stop moving, the telescopic motor is powered off first (before the winding motor), and cooperates with the winding mechanism to realize the function of tightening the projection screen. The present application performs special arc cutting on the blanking shape of the screen before fixing, and fixes it according to a special process, so that the screen connected to the two ends of the upper reel body or the screen connected to the two ends of the lower pull rod 220 is slightly shorter in length than the middle part in the vertical direction (before being tightened), so that the tension of the two ends of the screen is obviously greater than that of the middle part, thereby tightening the left and right edges of the screen. Among them, the special arc cutting obtains a screen with a central region being a straight line segment and a transition region being a gradually changing curve or a gradually changing straight line segment, so that the two ends of the screen connected to the two ends of the upper reel body or the screen connected to the two ends of the lower pull rod 220 have a tension obviously greater than that of the middle part, thereby tightening the left and right edges of the screen to eliminate the rolling edge.

[0102] The vehicle of the second aspect embodiment of the present application can be a private car, such as a sedan, an SUV, an MPV, or a pickup truck, etc. The vehicle can also be an operational vehicle, such as a van, a bus, a small truck, or a large trailer, etc. The vehicle can be a gasoline car or a new energy car. When the vehicle is a new energy car, it can be a hybrid car or a pure electric car. The vehicle includes the screen device of the first aspect embodiment of the present application, which can significantly increase the tension of the left and right edges of the screen, tighten the left and right edges of the screen to eliminate the rolling edge, thereby improving the rolling edge problem without increasing the side strip and the sewing line, and without causing the new problems of increased space occupation or other appearance defects, so that the user can obtain a better experience when using the vehicle with the screen device.

[0103] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present application.

[0104] The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. A curtain device, comprising: a roller assembly including a roller body; a curtain assembly including a curtain body and a pull rod, the curtain body including oppositely arranged first and second side edges, the first side edge being connected to the roller body, and the second side edge being connected to the pull rod; at least one stay assembly, one end of the stay assembly being abutted to the roller assembly, and the other end of the stay assembly being abutted to the pull rod; wherein the stay assembly is drivable to be unfolded to drive the curtain body to be unfolded in a first direction, and the roller body is drivable to be rotated to drive the curtain body to be rolled up; and, in a state that the curtain body is unfolded, the curtain body is subjected to a first direction tension force that is greater at both ends in a second direction than at a middle of the curtain body, the second direction being perpendicular to the first direction.

2. The curtain device of claim 1, wherein, a surface of the curtain body is a projection surface, and another surface of the curtain body is a back surface, the stay assembly being arranged on the back surface of the curtain body.

3. The curtain device of claim 1, wherein, in a state that the curtain body is not assembled to the curtain device, the first side edge includes first transition sections at both ends in the second direction and a first straight section between the both ends in the second direction, the first transition sections being closer to the second side edge than the first straight section, and / or the second side edge includes second transition sections at both ends in the second direction and a second straight section between the both ends in the second direction, the second transition sections being closer to the first side edge than the second straight section.

4. The curtain device of claim 3, wherein, in a state that the curtain body is assembled to the curtain device, each of the first transition sections is taut to be flush with the first straight section and connected to a circumferential side wall of the roller body, and / or each of the second transition sections is taut to be flush with the second straight section and connected to a circumferential side wall of the pull rod.

5. The curtain device of claim 3, wherein, the first side edge further includes a first fitting portion, in a state that the first side edge is connected to the roller body, both ends of the first fitting portion are taut to be flush with each other and connected to the circumferential side wall of the roller body.

6. The curtain device of claim 3, wherein, the curtain assembly further includes a backing plate and a connecting member, the backing plate being formed with a mounting groove and a mounting hole in communication with the mounting groove, the pull rod being assembled to the backing plate by being embedded in the mounting groove, the second side edge being arranged between a circumferential side wall of the pull rod and the mounting groove, and the connecting member being arranged in the mounting hole and used to fixedly connect the second side edge, the pull rod and the backing plate.

7. The curtain device of claim 6, wherein, the second side edge is sequentially fitted to each side surface of the pull rod when the pull rod is mounted in the mounting groove.

8. The curtain device of claim 6, wherein, the second side edge further includes a plurality of second fitting portions arranged in sequence along the second side edge to the first side edge, in a state that the pull rod is assembled to the backing plate, both ends of the second fitting portions are taut to be flush with each other and fitted to one of the circumferential side walls of the pull rod.

9. The curtain device of claim 8, wherein, each of the second fitting portions is arranged between the mounting groove and each of the circumferential side walls of the pull rod.

10. The curtain device of claim 3, wherein, The curtain device further comprises a first driving assembly and a second driving assembly, the first driving assembly is arranged on the reel assembly for driving the support rod assembly, the second driving assembly is arranged in the reel assembly and is used for driving the reel body, and the first driving assembly and the second driving assembly are arranged in linkage, so that the support rod assembly follows when the reel body actively outputs force, or the reel body follows when the support rod assembly actively outputs force.

11. The curtain device of claim 10, wherein, The reel assembly comprises a housing and a transmission assembly, the first driving assembly is arranged on the housing, and the reel body and the second driving assembly are arranged in the housing and are connected through the transmission assembly.

12. The curtain device of claim 10, wherein, When the curtain body is unfolded, the first driving assembly is configured to be self-locked after the curtain body is unfolded to the position, and the second driving assembly is configured to reverse action for a preset time after the curtain body is unfolded to the position, so that the second driving assembly can provide tension to the curtain body. And / or When the curtain body is retracted, the first driving assembly is configured to be self-locked after the curtain body is retracted to the position, and the second driving assembly is configured to continue to act in the same direction for a preset time after the curtain body is retracted to the position, so that the second driving assembly can provide tension to the curtain body.

13. The curtain device of claim 10, wherein, The support rod assembly comprises a joint part, a first support rod and a second support rod, one end of the first support rod is connected with the first driving assembly, one end of the second support rod is hinged with the pull rod, and the other end of the first support rod and the other end of the second support rod are hinged through the joint part; and / or The support rod assembly is arranged at least two, the number of the support rod assemblies and the first driving assembly corresponds, and each support rod assembly is arranged in the second direction.

14. The curtain device of claim 13, wherein, The abutment point position of one end of the second support rod hinged with the pull rod is less than 2cm from the intersection point of the second transition section and the second straight section in the second direction.

15. A vehicle comprising: The curtain device of any one of claims 1 to 14.

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