A bidirectional translating shade structure

Abstract

The application discloses a bidirectional translation sunshade curtain structure and relates to the technical field of sunshade curtain components. The bidirectional translation sunshade curtain structure comprises two guide rails, a pull plate assembly, a power assembly and a curtain cloth assembly which are arranged side by side. The power assembly comprises a pull plate driving mechanism and two translation telescopic driving mechanisms. During the unfolding process of the curtain cloth assembly, the pull plate driving mechanism can drive the pull plate assembly to translate to the front end and pull the curtain cloth assembly to make it unfold. The curtain cloth assembly can pull the two translation telescopic driving mechanisms to make them synchronously move relatively and elongate, so as to drive the curtain cloth assembly to move to both sides in the horizontal direction between the two guide rails. During the winding process of the curtain cloth assembly, the pull plate driving mechanism can drive the pull plate assembly to translate to the rear end, the translation telescopic driving mechanisms can synchronously move in opposite directions to shorten and wind the curtain cloth assembly, and the curtain cloth assembly can be driven to move to the middle in the horizontal direction between the two guide rails. The bidirectional translation sunshade curtain structure can improve the sunshade effect.

Description

Technical Field

[0001] This invention relates to the field of sunshade component technology, and in particular to a bidirectional translational sunshade structure. Background Technology

[0002] Currently, in applications such as vehicle sunshade, there is often a need for sun protection on glass, such as the windshield. Existing technologies typically use windshield sunshade devices, which are usually manually operated, resulting in poor adaptability and insufficient fit. For example, patent 201220472913.X provides a car with a windshield sunshade device, which manually unfolds and retracts the sunshade cloth on a roller. However, the sunshade cloth is rectangular, while vehicle glass, such as the windshield, is usually not a regular rectangle but a trapezoidal structure that is wider at the front and narrower at the back. The rectangular sunshade cloth has a limited coverage area, and there is always a large gap between the two sides of the sunshade cloth and the two sides of the glass during the unfolding or rewinding process on the roller, making it difficult to fit the contour of the glass. Summary of the Invention

[0003] The purpose of this invention is to provide a bidirectional translational sunshade structure to solve the problems existing in the prior art and improve the sunshade effect.

[0004] To achieve the above objectives, the present invention provides the following solution: This invention provides a bidirectional sliding sunshade structure, comprising two guide rails arranged side by side, a pull plate assembly, a power assembly, and a curtain assembly; the lateral spacing between the two guide rails gradually decreases from the front end to the rear end, and a rear beam is laterally provided at the rear end of each guide rail; the pull plate assembly is laterally disposed between the two guide rails and movably connected to them; the pull plate assembly can reciprocate between the front and rear ends of the two guide rails; the power assembly is disposed on the rear beam and includes a pull plate drive mechanism and two translational telescopic drive mechanisms; the pull plate drive mechanism is drively connected to the pull plate assembly and can drive the pull plate assembly to reciprocate; the two translational telescopic drive mechanisms are laterally parallel between the two guide rails, and can synchronously extend relative to each other or synchronously retract in opposite directions. The curtain assembly is positioned between the pull plate assembly and the translational telescopic drive mechanism. The front and rear sides of the curtain assembly are fixedly connected to the pull plate assembly and the translational telescopic drive mechanism, respectively. During the unfolding process, the pull plate drive mechanism can drive the pull plate assembly to translate towards the front end and pull the curtain assembly to unfold it. The curtain assembly can pull the two translational telescopic drive mechanisms to extend synchronously relative to each other, thereby enabling the curtain assembly to move laterally to both sides between the two guide rails. During the rewinding process, the pull plate drive mechanism can drive the pull plate assembly to translate towards the rear end, and the translational telescopic drive mechanisms can synchronously move in opposite directions to shorten and rewind the curtain assembly, thereby enabling the curtain assembly to move laterally towards the center between the two guide rails.

[0005] Preferably, each of the translational telescopic drive mechanisms includes a first transmission member, a second transmission member, and an elastic drive member; the first transmission member and the second transmission member are coaxially arranged, and the first transmission member includes a rotating part and a fixed part distributed axially and rotatably connected, the rotating part being movably connected to the second transmission member; the elastic drive member is connected to the rotating part and the fixed part; the rotating part is fixedly connected to the rear side of the curtain assembly; during the unfolding process, the rotating part can rotate axially relative to the second transmission member and the fixed part under the pulling action of the curtain assembly, and can cause the elastic drive member to undergo elastic torsional deformation, and during the rotation of the rotating part relative to the second transmission member, the first transmission member can translate axially relative to the second transmission member; during the winding process, after the pulling action of the curtain assembly is removed from the rotating part, the rotating part can rotate in the opposite direction axially relative to the second transmission member and the fixed part under the restoring force of the elastic drive member, so as to wind up the curtain assembly, and the first transmission member can translate in the opposite direction axially relative to the second transmission member.

[0006] Preferably, the first transmission component is configured as an outer tube including a tube body and a connecting seat, wherein the tube body is the rotating part and the connecting seat is the fixed part; the second transmission component is configured as a lead screw shaft; the tube body is coaxially sleeved on the outside of the lead screw shaft and is connected to the lead screw shaft for transmission; the connecting seat is disposed at the end of the tube body opposite to the lead screw shaft and is rotatably connected to the tube body, and the connecting seat is used for sliding guide connection with the rear beam in a direction parallel to the axial direction; the elastic drive component is respectively connected to the inner wall of the tube body and the connecting seat.

[0007] Preferably, the pull plate assembly can extend and retract laterally to adjust its lateral dimensions during the reciprocating translation between the front and rear ends of the two guide rails.

[0008] Preferably, the pull plate assembly includes a first pull plate, a second pull plate, an intermediate connecting tube, and two elastic connectors arranged in parallel laterally; the first pull plate and the second pull plate are respectively connected to the intermediate connecting tube through one of the elastic connectors, and both the first pull plate and the second pull plate can move laterally relative to the intermediate connecting tube; the outer ends of the first pull plate and the second pull plate are respectively movably connected to the two guide rails and are drively connected to the pull plate driving mechanism; the curtain assembly is connected to both the first pull plate and the second pull plate; during the winding process of the curtain assembly, the first pull plate and the second pull plate can move relative to each other in the lateral direction and can squeeze the corresponding elastic connectors; during the release process of the curtain assembly, the first pull plate and the second pull plate move relative to each other on both sides under the restoring force of the corresponding elastic connectors.

[0009] Preferably, the pull plate driving mechanism is connected to the corresponding first pull plate and second pull plate via sliding members that are slidably disposed on the two guide rails respectively. The pull plate driving mechanism can drive the two sliding members to slide synchronously back and forth along the corresponding guide rails, so as to drive the pull plate assembly to reciprocate and translate.

[0010] Preferably, the rear beam is provided with two laterally extending sliding grooves, which are arranged back and forth along the translation direction of the pull plate assembly, and the two translation telescopic drive mechanisms are arranged back and forth along the translation direction of the pull plate assembly; the two sliding grooves are slidably guided to the fixed parts of the two translation telescopic drive mechanisms respectively.

[0011] Preferably, the curtain assembly includes a first curtain and a second curtain distributed laterally, the front and rear sides of the first curtain are respectively connected to the pull plate assembly and a translational telescopic drive mechanism, the front and rear sides of the second curtain are respectively connected to the pull plate assembly and another translational telescopic drive mechanism; and the first curtain and the second curtain are staggered in the direction perpendicular to the curtain assembly.

[0012] Preferably, the rear beam is further provided with transversely distributed fabric support rods, which can be supported on the surface of the curtain assembly.

[0013] The present invention achieves the following technical effects compared to the prior art: The bidirectional sliding sunshade structure provided by this invention includes a pull plate drive mechanism that drives the pull plate assembly to translate to the front end of the guide rail and pull the curtain assembly to unfold it. The curtain assembly can pull two sliding telescopic drive mechanisms to extend synchronously relative to each other, and drive the curtain assembly to move laterally to both sides between the two guide rails. During the curtain assembly rewinding process, the pull plate drive mechanism can drive the pull plate assembly to translate to the rear end, and the two sliding telescopic drive mechanisms can synchronously move in opposite directions to shorten and rewind the curtain assembly, and drive the curtain assembly to move laterally towards the center between the two guide rails. Furthermore, the horizontal movement between the two guide rails... The trapezoidal structure, with its gradually decreasing spacing from front to back, can adapt to trapezoidal glass shapes such as windshields. Combined with two translational telescopic drive mechanisms, it can drive the curtain assembly to move during both retraction and release. Compared to traditional rectangular manually operated sun visors, this design is easier to use. Furthermore, the curtain assembly's movement to the sides during release reduces the unshaded gaps between the sides of the curtain assembly and the sides of the glass, thus covering a larger glass area, reducing direct sunlight, and improving the shading effect. Additionally, the curtain assembly's movement towards the center during retraction avoids interference between the sides and the narrow area at the rear of the guide rail. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the translational telescopic drive mechanism provided in Embodiment 1 of the present invention; Figure 2 for Figure 1 Sectional view along line A-A; Figure 3 This is an axonometric schematic diagram of a bidirectional translational sunshade curtain structure provided in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the sliding guide connection between the two translational telescopic drive mechanisms and the rear beam provided in Embodiment 1 of the present invention; Figure 5 This is an internal schematic diagram of the pull plate assembly provided in Embodiment 1 of the present invention.

[0016] In the diagram: 1-Guide rail; 2-Rear beam; 21-Slide groove; 3-Pulling plate assembly; 31-First pulling plate; 32-Second pulling plate; 33-Intermediate connecting pipe; 34-Elastic connecting component; 4-Power assembly; 41-Pulling plate drive mechanism; 42-Translation and telescopic drive mechanism; 43-First transmission component; 431-Rotating part; 432-Fixing part; 44-Second transmission component; 45-Elastic drive component; 5-Curtain assembly; 51-First curtain; 52-Second curtain; 6-Support rod. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] The purpose of this invention is to provide a bidirectional translational sunshade structure to solve the problems existing in the prior art and improve the sunshade effect.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 This embodiment provides a two-way sliding sunshade curtain structure. Please refer to [link / reference]. Figures 3-5The system includes two guide rails 1 arranged side by side, a pull plate assembly 3, a power assembly 4, and a curtain assembly 5. The lateral spacing between the two guide rails 1 gradually decreases from the front end to the rear end, and a rear beam 2 is laterally arranged at the rear end of the two guide rails 1. The pull plate assembly 3 is laterally arranged between the two guide rails 1 and is movably connected to the two guide rails 1. The pull plate assembly 3 can reciprocate between the front end and the rear end of the two guide rails 1 and can be laterally extended and retracted to adjust the lateral dimension. The power assembly 4 is arranged on the rear beam 2 and includes a pull plate drive mechanism 41 and two translational extension drive mechanisms 42. The pull plate drive mechanism 41 is connected to the pull plate assembly 3 and can drive the pull plate assembly 3 to reciprocate. The two translational extension drive mechanisms 42 are arranged laterally parallel between the two guide rails 1 and can be synchronously extended and retracted. The curtain assembly 5 is positioned between the pull plate assembly 3 and the translational telescopic drive mechanism 42. The front and rear sides of the curtain assembly 5 are respectively fixedly connected to the pull plate assembly 3 and the translational telescopic drive mechanism 42. During the unfolding process of the curtain assembly 5, the pull plate drive mechanism 41 can drive the pull plate assembly 3 to translate towards the front end and pull the curtain assembly 5 to unfold it. The curtain assembly 5 can pull the two translational telescopic drive mechanisms 42 to extend synchronously relative to each other, thereby enabling the curtain assembly 5 to move laterally to both sides between the two guide rails 1. During the rewinding process of the curtain assembly 5, the pull plate drive mechanism 41 can drive the pull plate assembly 3 to translate towards the rear end, and the translational telescopic drive mechanism 42 can synchronously shorten and rewind the curtain assembly 5 in opposite directions, and can also enable the curtain assembly 5 to move laterally towards the center between the two guide rails 1.

[0021] Among them, the pull plate drive mechanism 41 can drive the pull plate assembly 3 to translate to the front end of the guide rail 1 and pull the curtain assembly 5 to unfold it. The curtain assembly 5 can pull the two translational telescopic drive mechanisms 42 to extend synchronously relative to each other, and drive the curtain assembly 5 to move laterally to both sides between the two guide rails 1, and can cause the elastic drive member 45 to undergo elastic torsional deformation. During the winding process of the curtain assembly 5, the pull plate drive mechanism 41 can drive the pull plate assembly 3 to translate to the rear end, and the two translational telescopic drive mechanisms 42 can move synchronously in opposite directions to shorten and wind up the curtain assembly 5, and can drive the curtain assembly 5 to move laterally towards the middle between the two guide rails 1. Furthermore, the lateral spacing between the two guide rails 1 gradually decreases from front to back, forming a trapezoidal structure that can adapt to trapezoidal glass such as the shape of the windshield. In conjunction with the two translational telescopic drive mechanisms 42, the curtain assembly 5 can be driven to move during the unfolding and retraction process. Compared with the traditional rectangular structure of manually operated sun visors, it is easier to use. Moreover, the movement of the curtain assembly 5 to the sides during the unfolding process reduces the unshaded gaps between the sides of the curtain assembly 5 and the sides of the glass, thereby covering a larger glass area, reducing the area of ​​direct sunlight and improving the sunshade effect. Furthermore, the movement of the curtain assembly 5 towards the center during the retraction process can avoid interference between the sides and the narrow area at the rear end of the guide rail 1.

[0022] To facilitate the movement of the curtain assembly 5 from the center to both sides and from both sides to the center, two translational telescopic drive mechanisms 42 are provided in conjunction with the pull plate drive mechanism 41 to drive the curtain assembly 5. By having the two translational telescopic drive mechanisms 42 extend towards the center or shorten towards both sides simultaneously, the curtain assembly 5 can be driven to contract towards the center or expand outward in the lateral direction. The difference between the two translational telescopic drive mechanisms 42 is that they are in opposite directions. That is, the fixed end of the lead screw shaft of one translational telescopic drive mechanism 42 is fixedly connected to the rear beam 2 on one side of the lateral direction by bolts, and the fixed end of the lead screw shaft of the other translational telescopic drive mechanism 42 is fixedly connected to the rear beam 2 on the other side of the lateral direction by bolts. The outer tubes on the two lead screw shafts can move synchronously relative to each other or in opposite directions to drive the curtain assembly 5 to move. Furthermore, the two translational telescopic drive mechanisms 42 are distributed along the front and back, which can avoid interference during the extension and shortening process.

[0023] Moreover, it can achieve the winding and unwinding of the curtain assembly 5, as well as automatic translation during the winding and unwinding process, with only one pull plate drive mechanism 41, saving costs and facilitating integrated setup, thus reducing volume occupation.

[0024] In the optional solutions of this embodiment, a more preferred option is described in the following description: Figure 1 and Figure 2 Each of the aforementioned translational and telescopic drive mechanisms 42 includes a first transmission member 43, a second transmission member 44, and an elastic drive member 45. The first transmission member 43 and the second transmission member 44 are coaxially arranged, and the first transmission member 43 includes a rotating part 431 and a fixed part 432 that are axially distributed and rotatably connected. The rotating part 431 is movably connected to the second transmission member 44. The elastic drive member 45 is connected to the rotating part 431 and the fixed part 432, and the rotating part 431 is fixedly connected to the rear side of the curtain assembly 5. During the unfolding process, the rotating part 431 can be pulled relative to the second transmission member 44 under the pulling action of the curtain assembly 5. The fixed part 432 rotates around the axis, and the elastic drive member 45 undergoes elastic torsional deformation. During the rotation of the rotating part 431 relative to the second transmission member 44, the first transmission member 43 can translate axially relative to the second transmission member 44. During the winding process, after the pulling force of the curtain assembly 5 is removed from the rotating part 431, the rotating part 431 can rotate in the opposite direction around the axis relative to the second transmission member 44 and the fixed part 432 under the restoring force of the elastic drive member 45, so as to wind up the curtain assembly 5. The first transmission member 43 can translate axially in the opposite direction relative to the second transmission member 44.

[0025] Through the rotational engagement of the first transmission member 43 and the second transmission member 44, the rotating part 431 of the first transmission member 43 can rotate axially relative to the second transmission member 44 and the fixed part 432 under the pulling action of the curtain assembly 5, and can cause the elastic drive member 45 to undergo elastic torsional deformation. During the rotation of the rotating part 431 relative to the second transmission member 44, the first transmission member 43 can translate axially relative to the second transmission member 44. After the pulling action of the curtain assembly 5 is removed from the rotating part 431, the rotating part 431 can rotate in the opposite direction axially relative to the second transmission member 44 and the fixed part 432 under the restoring force of the elastic drive member 45, and the first transmission member 43 can translate axially relative to the second transmission member 44 and the fixed part 432. The second transmission member 44 moves in the opposite direction along the axial direction; thus, during the rotation of the first transmission member 43 relative to the second transmission member 44, it can move axially; thus, during the release of the curtain assembly 5 by external force, the rotating part 431 rotates and drives the fixed part 432 to move in a direction close to the side edge of the glass relative to the second transmission member 44, thus reducing the unshielded gap between the curtain assembly 5 and the side edge of the glass; and during the winding of the curtain assembly 5, the rotating part 431 can rotate under the torsional restoring force of the elastic drive member 45 and drive the fixed part 432 to move in a direction away from the side edge of the glass relative to the second transmission member 44, thus avoiding interference with the side edge of the glass after winding.

[0026] In the optional scheme of this embodiment, more preferably, the first transmission member 43 is configured as an outer tube including a tube body and a connecting seat, the tube body is a rotating part 431, and the connecting seat is a fixed part 432; the second transmission member 44 is configured as a lead screw shaft; the tube body is coaxially sleeved outside the lead screw shaft and is connected to the lead screw shaft for transmission, the connecting seat is disposed at the end of the tube body away from the lead screw shaft and is rotatably connected to the tube body, and the connecting seat is used for sliding guide connection with the rear beam 2 in a direction parallel to the axial direction; the elastic drive member 45 is respectively connected to the inner wall of the tube body and the connecting seat.

[0027] The outer tube is coaxially mounted on the outside of the screw shaft and connected to the curtain assembly 5 via a screw drive. The elastic drive component 45 is disposed inside the outer tube and connected to the tube body of the outer tube. The fixed end of the screw shaft is fixedly connected to one side of the rear beam 2 by bolts. Specifically, during the release of the curtain assembly 5, the pull plate drive mechanism 41 drives the pull plate assembly 3 to move forward, and pulls the tube body of the outer tube relative to the screw shaft through the curtain assembly 5, so that the tube body of the outer tube can drive the curtain assembly 5 to move laterally to both sides between the two guide rails 1, and can enable the elastic drive component 45 to move laterally to both sides. The moving part 45 undergoes elastic torsional deformation; during the winding process of the curtain assembly 5, the pull plate drive mechanism 41 drives the pull plate assembly 3 to move to the rear end, and the tube body of the outer tube can rotate in the opposite direction relative to the screw shaft to wind up the curtain assembly 5 under the torsional restoring force of the elastic drive part 45, and the outer tube can drive the curtain assembly 5 to move laterally towards the middle between the two guide rails 1; wherein, the elastic drive part 45 can be set as a coil spring, which can deform during the unfolding process of the outer tube rotating the curtain assembly 5, and can provide the reverse rotation driving force of the outer tube during the winding process of the curtain assembly 5.

[0028] The connecting seat and one end of the outer tube are connected by a rotating component for circumferential rotation and axial relative fixation. The rotating component can be a conventional rotating ring or bearing. The two ends of the elastic drive component 45 can be fixedly connected to the inner wall of the tube and the connecting seat by conventional methods such as welding or bolting, so that the rotation of the tube can drive the elastic drive component 45 to twist.

[0029] More preferably, each outer tube is slidably connected to the rear beam 2, and the rear beam 2 can guide the outer tube in the lateral direction.

[0030] In order to ensure that the outer tube can be stably laterally translated relative to the rear beam 2 during rotation, an additional sliding constraint is added between the connecting seat of the outer tube and the rear beam 2, so that the rotational driving force of the elastic drive member 45 can be converted into the rotational and translational motion of the outer tube as completely as possible.

[0031] In the optional scheme of this embodiment, more preferably, the pull plate assembly 3 can be extended and retracted laterally to adjust the lateral size during the reciprocating translation between the front and rear ends of the two guide rails 1.

[0032] In order to coordinate with the translational telescopic drive mechanism 42 to laterally translate the curtain assembly 5, the pull plate assembly 3 is set as a lateral telescopic structure, which can adapt to the trapezoidal lateral interval size during the opening and closing of the curtain assembly 5. Thus, the curtain assembly 5 is driven by the power assembly 4 to translate during opening, closing and closing, and in conjunction with the telescopic structure of the pull plate assembly 3, it is easier to use than the traditional rectangular structure of manually operated sunshade. Moreover, the movement of the curtain assembly 5 to the sides during the opening and closing process can reduce the unshaded gap between the sides of the curtain assembly 5 and the guide rail 1, thereby covering a larger glass area and reducing the area of ​​direct sunlight. Furthermore, the movement of the curtain assembly 5 to the center during the closing process can avoid interference between the sides and the narrow area at the rear end of the guide rail 1.

[0033] Further preferred, please refer to Figure 5 The pull plate assembly 3 includes a first pull plate 31, a second pull plate 32, an intermediate connecting tube 33, and two elastic connectors 34 arranged in parallel laterally. The first pull plate 31 and the second pull plate 32 are respectively connected to the intermediate connecting tube 33 through an elastic connector 34, and both the first pull plate 31 and the second pull plate 32 can move laterally relative to the intermediate connecting tube 33. The outer ends of the first pull plate 31 and the second pull plate 32 are respectively movably connected to two guide rails 1 and are connected to the pull plate drive mechanism 41 for transmission. The curtain assembly 5 is connected to both the first pull plate 31 and the second pull plate 32.

[0034] During the winding process of the curtain assembly 5, the first pull plate 31 and the second pull plate 32 can move relative to each other in the lateral direction and can squeeze the corresponding elastic connector 34; during the release process of the curtain assembly 5, the first pull plate 31 and the second pull plate 32 move relative to each other on both sides under the restoring force of the corresponding elastic connector 34.

[0035] Specifically, the intermediate connecting pipe 33 is configured as a pipe with two ends and a long side opening, such as a C-shaped pipe, so that the first pull plate 31 and the second pull plate 32 can extend into the intermediate connecting pipe 33. The long side opening facilitates the entry of the curtain assembly 5 and its connection with the first pull plate 31 and the second pull plate 32. The elastic connector 34 is configured as a spring, and the two ends of the spring can be fixedly connected to the intermediate connecting pipe 33 and the first pull plate 31 or the second pull plate 32 respectively by conventional means such as bolts. The first pull plate 31 and the second pull plate 32 slide laterally. Connected to the intermediate connecting pipe 33 and elastically supported by a spring, the pull plate assembly 3 can adaptively extend and retract during reciprocating translation to adapt to the lateral spacing between the guide rails 1; further, in order to ensure the sliding stability between the first pull plate 31 and the second pull plate 32 and the intermediate connecting pipe 33, a guide groove or guide ring can be provided inside the intermediate connecting pipe 33 to slide and guide the first pull plate 31 and the second pull plate 32. The guide groove is set as a C-shaped groove, or the guide ring is sleeved on the outside of the first pull plate 31 or the second pull plate 32.

[0036] More preferably, the pull plate drive mechanism 41 is disposed on the rear beam 2. The pull plate drive mechanism 41 is connected to the corresponding first pull plate 31 and second pull plate 32 through sliding members that are respectively slidably disposed on the two guide rails 1. The pull plate drive mechanism 41 can drive the two sliding members to slide synchronously back and forth along the corresponding guide rails 1 in the front and rear directions, so as to drive the pull plate assembly 3 to reciprocate and translate.

[0037] Specifically, the pull plate drive mechanism 41 includes a motor and two rigid tubes. The motor is fixedly connected to the rear beam 2 via a bracket, and connected to two guide rails 1 via rigid tubes on both sides. The sliding element in the guide rail 1 can be a slider, which can be fixed to the end of the pull plate assembly 3 by bolts or snap-fit. A motor is connected to the two sliders via pull locks in the two rigid tubes. The pull locks drive the two sliders to slide synchronously back and forth in the corresponding guide rails 1, thereby driving the pull plate assembly 3 to move back and forth. The transmission connection between the motor and the pull lock is a conventional mechanism, which will not be described in detail here. Moreover, it should be noted that the structure of the pull plate drive mechanism 41 is not limited to the above method. Other methods can also be used, such as setting two telescopic motors or setting two screw transmission mechanisms to cooperate with the sliders in the two guide rails 1 to achieve linear reciprocating drive of the sliders in the guide rails 1.

[0038] In the optional scheme of this embodiment, more preferably, the rear beam 2 is provided with two laterally extending slide grooves 21, the two slide grooves 21 are arranged back and forth along the translation direction of the pull plate assembly 3, and the two translation telescopic drive mechanisms 42 are arranged back and forth along the translation direction of the pull plate assembly 3; the two slide grooves 21 and the fixing parts 432 of the two translation telescopic drive mechanisms 42 are respectively slidably guided and connected.

[0039] In order to ensure that the outer tube can stably move laterally relative to the rear beam 2 during rotation, additional sliding constraints are added to the connecting seat of the outer tube and the rear beam 2, so that the rotational driving force of the elastic drive component 45 can be converted into the rotational and translational motion of the outer tube as completely as possible. The outer wall of the connecting seat is provided with a protrusion, and the rear beam 2 is provided with a sliding groove 21. The protrusion of the connecting seat can be embedded in the sliding groove 21 and can slide. In this way, the connecting seat can provide lateral guidance without interfering with the rotation of the tube body during the rotation of the outer tube body around the screw axis.

[0040] In the optional embodiment, more preferably, the curtain assembly 5 includes a first curtain 51 and a second curtain 52 distributed laterally. The front and rear sides of the first curtain 51 are respectively connected to the pull plate assembly 3 and the translational telescopic drive mechanism 42, and the front and rear sides of the second curtain 52 are respectively connected to the pull plate assembly 3 and the translational telescopic drive mechanism 42; and the first curtain 51 and the second curtain 52 are staggered in the direction perpendicular to the curtain assembly 5.

[0041] To avoid wrinkles and interference during the movement of the curtain assembly 5 towards the center, the curtain assembly 5 is configured as two parts, namely a first curtain 51 and a second curtain 52. The front sides of the first curtain 51 and the second curtain 52 are respectively connected to the first pull plate 31 and the second pull plate 32. The first pull plate 31 and the translational telescopic drive mechanism 42 roll up and release the first curtain 51, and the second pull plate 32 and the translational telescopic drive mechanism 42 roll up and release the second curtain 52. Moreover, by staggering the first curtain 51 and the second curtain 52, independent and simultaneous driving of the first curtain 51 and the second curtain 52 can be achieved, avoiding interference and accumulation in the middle part.

[0042] Furthermore, in order to achieve a staggered distribution of the first curtain fabric 51 and the second curtain fabric 52, such as Figure 5 As shown, the first pull plate 31 and the second pull plate 32 are staggered in the direction perpendicular to the overall reciprocating translational plane. In this way, the first curtain 51 is connected to the first pull plate 31, and the second curtain 52 is connected to the second pull plate 32. The first curtain 51 and the second curtain 52 can be staggered in space to avoid interference between the middle sides of the first curtain 51 and the second curtain 52. Moreover, in order to avoid gaps between the first curtain 51 and the second curtain 52 affecting the sunshade effect, the middle sides of the first curtain 51 and the second curtain 52 can be overlapped in the vertical projection direction.

[0043] More preferably, the rear beam 2 is also provided with transversely distributed fabric support rods 6, which can be supported on the surface of the curtain assembly 5.

[0044] In order to keep the curtain assembly 5 always taut, a horizontally distributed support rod 6 is installed on the rear beam 2 by bolts or by bearings to tension the curtain assembly 5. Specifically, the support rod 6 may simultaneously tension and support the first curtain 51 and the second curtain 52, or only tension and support the first curtain 51 or the second curtain 52, depending on actual needs.

[0045] One specific application scenario for the bidirectional sliding sunshade structure provided in this embodiment is as follows: The two-way sliding sunshade structure is installed in the vehicle's cab and faces the windshield. Two guide rails 1 can be distributed on both sides of the A-pillars of the windshield, and the rear beam 2 is located at the top rear end of the windshield, which basically does not affect the windshield's visibility and appearance. When the vehicle is in motion, the powertrain 4 drives the pull plate assembly 3 to unfold towards the front to achieve sunshade in the overhead area of ​​the windshield, improving the comfort of long-distance driving. Alternatively, when the vehicle is parked, the powertrain 4 drives the pull plate assembly 3 to fully unfold towards the front to achieve sunshade in the entire windshield area. The curtain assembly 5 is made of high light-blocking and heat-insulating coating materials. When unfolded, it can effectively block ultraviolet and infrared rays and reduce the temperature rise inside the car caused by direct sunlight. The guide rail 1 and powertrain 4 are mostly hidden inside the A-pillar, roof or dashboard. When retracted, the curtain assembly 5 is completely stored, which will not obstruct the forward view or destroy the overall interior style of the car. It is more beautiful and neat than the external sunshade. Moreover, the motor drive, combined with the adaptive telescopic mechanism of the pull plate assembly 3 and the design of the guide rail 1, ensures stable and smooth movement without the risk of falling off.

[0046] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A bidirectional translational sunshade curtain structure, characterized in that: include: Two guide rails (1) are arranged side by side. The lateral spacing between the two guide rails (1) gradually decreases from the front end to the rear end, and a rear beam (2) is arranged laterally at the rear end of the two guide rails (1). The pull plate assembly (3) is laterally disposed between the two guide rails (1) and movably connected to the two guide rails (1); the pull plate assembly (3) can reciprocate between the front end and the rear end of the two guide rails (1), and the pull plate assembly (3) can extend and retract laterally during the reciprocating translation process to adjust the lateral dimension; The powertrain (4) is mounted on the rear beam (2) and includes a pull plate drive mechanism (41) and two translational telescopic drive mechanisms (42). The pull plate drive mechanism (41) is connected to the pull plate assembly (3) and can drive the pull plate assembly (3) to reciprocate. The two translational telescopic drive mechanisms (42) are arranged laterally parallel between the two guide rails (1) and the two translational telescopic drive mechanisms (42) can synchronously extend or synchronously shorten relative to each other. and A curtain assembly (5) is disposed between the pull plate assembly (3) and the two translational telescopic drive mechanisms (42); the curtain assembly (5) includes a first curtain (51) and a second curtain (52) distributed laterally, the front and rear sides of the first curtain (51) are respectively connected to the pull plate assembly (3) and one of the translational telescopic drive mechanisms (42), and the front and rear sides of the second curtain (52) are respectively connected to the pull plate assembly (3) and another translational telescopic drive mechanism (42); and in the direction perpendicular to the curtain assembly (5), the first curtain (51) and the second curtain (52) are staggered. During the unfolding process of the curtain assembly (5), the pull plate drive mechanism (41) can drive the pull plate assembly (3) to move forward and pull the curtain assembly (5) to unfold it. The curtain assembly (5) can pull the two translational telescopic drive mechanisms (42) to extend synchronously relative to each other, so as to drive the curtain assembly (5) to move laterally to both sides between the two guide rails (1). During the winding process of the curtain assembly (5), the pull plate drive mechanism (41) can drive the pull plate assembly (3) to move backward, and the two translational telescopic drive mechanisms (42) can shorten and wind up the curtain assembly (5) synchronously relative to each other, and drive the curtain assembly (5) to move laterally towards the middle between the two guide rails (1).

2. The bidirectional translational sunshade structure according to claim 1, characterized in that: Each of the aforementioned translational telescopic drive mechanisms (42) includes a first transmission member (43), a second transmission member (44), and an elastic drive member (45). The first transmission member (43) is coaxially arranged with the second transmission member (44), and the first transmission member (43) includes a rotating part (431) and a fixed part (432) that are axially distributed and rotatably connected. The rotating part (431) is movably connected to the second transmission member (44). The elastic drive member (45) is connected to the rotating part (431) and the fixed part (432). The rotating part (431) is fixedly connected to the rear side of the curtain assembly (5). During the unfolding process, the rotating part (431) can rotate axially relative to the second transmission member (44) and the fixed part (432) under the pulling action of the curtain assembly (5), and can cause the elastic drive member (45) to undergo elastic torsional deformation. During the rotation of the rotating part (431) relative to the second transmission member (44), the first transmission member (43) can translate axially relative to the second transmission member (44). During the winding process, after the pulling action of the curtain assembly (5) is removed from the rotating part (431), the rotating part (431) can rotate axially in the opposite direction relative to the second transmission member (44) and the fixed part (432) under the restoring force of the elastic drive member (45) so as to wind up the curtain assembly (5), and the first transmission member (43) can translate axially in the opposite direction relative to the second transmission member (44).

3. The bidirectional translational sunshade structure according to claim 2, characterized in that: The first transmission component (43) is configured as an outer tube including a tube body and a connecting seat, wherein the tube body is the rotating part (431) and the connecting seat is the fixing part (432); the second transmission component (44) is configured as a lead screw shaft; The tube body is coaxially sleeved outside the lead screw shaft and is connected to the lead screw shaft for transmission. The connecting seat is located at one end of the tube body away from the lead screw shaft and is rotatably connected to the tube body. The connecting seat is slidably guided to the rear beam (2) in a direction parallel to the axial direction. The elastic drive member (45) is connected to the inner wall of the tube body and the connecting seat respectively.

4. The bidirectional translational sunshade structure according to claim 1, characterized in that: The pull plate assembly (3) includes a first pull plate (31), a second pull plate (32), an intermediate connecting tube (33), and two elastic connecting members (34) arranged in parallel laterally. The first pull plate (31) and the second pull plate (32) are respectively connected to the intermediate connecting tube (33) through an elastic connecting member (34), and both the first pull plate (31) and the second pull plate (32) can move laterally relative to the intermediate connecting tube (33). The outer ends of the first pull plate (31) and the second pull plate (32) are respectively movably connected to the two guide rails (1) and are connected to the pull plate driving mechanism (41) for transmission. The curtain assembly (5) is connected to both the first pull plate (31) and the second pull plate (32). During the winding process of the curtain assembly (5), the first pull plate (31) and the second pull plate (32) can move relative to each other in the lateral direction and can squeeze the corresponding elastic connector (34). During the unfolding process of the curtain assembly (5), the first pull plate (31) and the second pull plate (32) move relative to each other on both sides under the restoring force of the corresponding elastic connector (34).

5. The bidirectional translational sunshade structure according to claim 4, characterized in that: The pull plate driving mechanism (41) is connected to the first pull plate (31) and the second pull plate (32) via sliding members that are respectively slidably arranged on the two guide rails (1). The pull plate driving mechanism (41) can drive the two sliding members to slide synchronously back and forth along the corresponding guide rails (1) so as to drive the pull plate assembly (3) to move back and forth.

6. The bidirectional translational sunshade structure according to claim 5, characterized in that: The rear beam (2) is provided with two transversely extending slide grooves (21). The two slide grooves (21) are arranged back and forth along the translation direction of the pull plate assembly (3). The two translation telescopic drive mechanisms (42) are arranged back and forth along the translation direction of the pull plate assembly (3). The two slide grooves (21) and the fixed parts (432) of the two translation telescopic drive mechanisms (42) are respectively slidably guided and connected.

7. The bidirectional translational sunshade structure according to claim 1, characterized in that: The rear beam (2) is also provided with transversely distributed support rods (6), which can be supported on the surface of the curtain assembly (5).

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