Telescopic mechanism, curtain assembly, and vehicle

Abstract

The utility model relates to a telescopic mechanism, a curtain assembly and a vehicle. The telescopic mechanism comprises a fixing base, a fork arm assembly and a connecting assembly. The fork arm assembly comprises a first supporting rod, a second supporting rod and a rotating shaft, the first supporting rod and the second supporting rod are arranged in a crossed mode, and the first supporting rod is rotationally matched with the second supporting rod through the rotating shaft. The first supporting rod and the second supporting rod are movably connected to the fixing base. The connecting assembly is movably arranged on the fixing base and used for driving the first supporting rod and the second supporting rod to rotate relative to each other when moving relative to the fixing base. At least one of the first supporting rod and the second supporting rod is provided with a first connecting arm and a second connecting arm. And the first connecting arm and the second connecting arm are bent. One end of the first connecting arm is rotationally connected to the fixing base, and the other end of the first connecting arm is connected with the second connecting arm. According to the telescopic mechanism, the torque conversion rate of the fork arm can be improved, so that unfolding of the curtain body is guaranteed, and the unfolding quality of the curtain body is improved.

Description

Technical Field

[0001] This application relates to the field of lifting technology, and in particular to telescopic mechanisms, curtain assemblies, and vehicles. Background Technology

[0002] Generally, vehicles are equipped with windows for ventilation and light. However, since most car windows are made of glass, their heat dissipation performance is poor. Especially in the hot summer, strong sunlight entering the car causes the interior temperature to rise rapidly, making the driver and passengers uncomfortable and potentially damaging electronic equipment and interior materials, accelerating their aging and fading. Therefore, many consumers choose to install curtain assemblies or other methods to reduce direct sunlight on the windows.

[0003] While car windows (including sunroofs and door windows) can reduce direct sunlight through methods such as dimming glass or curtain assemblies, the windshield's unique location makes it difficult to employ similar dimming technology as a sunroof. Therefore, windshield curtain assemblies have emerged as an ideal solution for car owners to address this issue.

[0004] In related technologies, the deployment and retraction of the front windshield curtain assembly mostly adopts a fork arm deployment mechanism. However, the torque conversion rate of the currently used fork arm deployment mechanism is low, which makes deployment and retraction difficult and the curtain assembly retraction and retraction effect is not good. Utility Model Content

[0005] Therefore, it is necessary to provide a telescopic mechanism, a curtain assembly, and a vehicle to address the problem of increased difficulty in deploying and deploying the curtain due to the low torque conversion rate of the fork arm.

[0006] A telescopic mechanism, the telescopic mechanism comprising:

[0007] Fixed base;

[0008] The fork arm assembly includes a first support rod, a second support rod, and a rotating shaft. The first support rod and the second support rod are arranged crosswise, and the first support rod is rotatably engaged with the second support rod through the rotating shaft. Both the first support rod and the second support rod are movably connected to the fixed base.

[0009] A connecting assembly, movably mounted on the fixed base, is used to drive the first support rod and the second support rod to rotate relative to each other when moving relative to the fixed base; wherein...

[0010] At least one of the first support rod and the second support rod is provided with a first connecting arm and a second connecting arm; the first connecting arm and the second connecting arm are bent; one end of the first connecting arm is rotatably connected to the fixed base, and the other end of the first connecting arm is connected to the second connecting arm.

[0011] In one embodiment, the first connecting arm has a first end and a second end along the length of the first connecting arm; the first end is used to rotate with the fixed seat, and the second end is bent and connected to the second connecting arm.

[0012] And / or, the first connecting arm and the second connecting arm are integrally formed.

[0013] In one embodiment, the angle between the first connecting arm and the second connecting arm is α, and 0° < α ≤ 90°;

[0014] And / or, the length of the first connecting arm is less than the length of the second connecting arm.

[0015] In one embodiment, the connecting assembly includes a first slider and a second slider, one of which is rotatably connected to the first support rod, and the other of which is rotatably connected to the second support rod; the first slider and the second slider are slidably disposed on the fixed base.

[0016] In one embodiment, the telescopic mechanism further includes a drive assembly, which includes a drive motor and a transmission assembly; the transmission assembly is drively connected to the drive motor and is connected to the first slider and the second slider, and the drive motor drives the first slider and the second slider to slide in opposite directions through the transmission assembly.

[0017] In one embodiment, the transmission assembly includes an active rotating member, a driven rotating member, and a flexible transmission member. The drive motor is connected to the active rotating member to drive the active rotating member to rotate. The flexible transmission member is rotatably connected between the active rotating member and the driven rotating member, and the flexible transmission member has a first side and a second side disposed opposite to each other. The first slider is connected to the first side, and the second slider is connected to the second side, such that the first slider and the second slider slide synchronously in opposite directions.

[0018] In one embodiment, the connecting assembly further includes a first limiting member connected to the fixed base, and the first limiting member is used to engage with at least one of the first slider and the second slider for limiting engagement.

[0019] In one embodiment, the telescopic mechanism further includes a support rod; the support rod is connected to one side of the curtain body, and the other side of the curtain body is connected to the fixed seat; wherein the support rod is connected to the end of the fork arm assembly located away from the fixed seat.

[0020] In one embodiment, the fork arm assembly further includes a third support rod and a fourth support rod; one end of the third support rod is rotatably connected to the first support rod, and the other end of the third support rod is connected to the support rod; one end of the fourth support rod is rotatably connected to the second support rod, and the other end of the fourth support rod is connected to the support rod.

[0021] And / or, the telescopic mechanism further includes a roller member connected to the fixed base, and the side of the curtain away from the support rod is wound around the roller member.

[0022] In one embodiment, the telescopic mechanism includes at least two fork arm assemblies and at least two connecting assemblies, wherein the fork arm assemblies and the connecting assemblies are arranged in a one-to-one correspondence; the at least two fork arm assemblies are arranged at intervals.

[0023] In one embodiment, the telescopic mechanism further includes a second limiting member disposed on the fixed base and between two adjacent fork arm assemblies, the second limiting member being used to abut and limit the engagement with the two adjacent connecting assemblies.

[0024] A curtain assembly includes a curtain body and a telescopic mechanism as described in the above embodiments, wherein the curtain body is connected to one end of a first support rod and a second support rod located away from the fixed base.

[0025] A vehicle includes a window and a curtain assembly as described above, the curtain assembly being extendable and retractable on the window to cooperate with at least a portion of the window covering.

[0026] The aforementioned telescopic mechanism, curtain assembly, and vehicle, including the design of the first and second support rods in the telescopic mechanism, enable their intersection to form a stable structure, effectively enhancing the load-bearing capacity and stability of the telescopic mechanism. With the cooperation of the rotating shaft, the first and second support rods can move flexibly in directions that are closer to or further away from each other, thereby achieving smooth telescopic extension and retraction of the curtain.

[0027] Furthermore, the connection components allow users to easily control the movement of the telescopic mechanism by applying external force. The rationally designed structure of the connection components enables them to connect stably to the first or second support rod and effectively transmit force, thereby achieving precise control of the telescopic mechanism.

[0028] In addition, at least one of the first and second support rods is provided with a first connecting arm and a second connecting arm, that is, at least one of the first and second support rods is set in an L-shaped or L-shaped structure, which is conducive to increasing the force arm. Thus, under the same lifting force of the connecting components, the increase in the force arm is conducive to improving the torque conversion rate of the fork arm assembly, thereby helping the fork arm assembly to improve the smoothness of the opening and closing movement, ensuring the normal opening of the curtain, and meeting the needs of different users. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the curtain assembly in one embodiment.

[0030] Figure 2 for Figure 1 The diagram shows an enlarged structural representation of A.

[0031] Figure 3 This is a schematic diagram of the fork arm assembly in one embodiment.

[0032] Figure 4 This is a schematic diagram of the structure of the first or second support rod in one embodiment.

[0033] Figure 5 This is a schematic diagram of the cooperation structure between the driving component and the connecting component in one embodiment.

[0034] Figure 6 This is a schematic diagram illustrating the principle structure of the cooperation between the driving component and the connecting component in one embodiment.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100. Telescopic mechanism; 110. Fixed base; 120. Fork arm assembly; 1201. First connecting arm; 1201a. First end; 1201b. Second end; 1202. Second connecting arm; 121. First support rod; 122. Second support rod; 123. Rotating shaft; 124. Third support rod; 125. Fourth support rod; 130. Connecting assembly; 131. First slider; 132. Second slider; 133. First limiting member; 140. Drive assembly; 141. Drive motor; 142. Transmission assembly; 1421. Active rotating member; 1422. Driven rotating member; 1423. Flexible transmission member; 1423a. First side; 1423b. Second side; 150. Second limiting member; 160. Support rod; X1. First direction; X2. Second direction; Y. Third direction. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0038] This application provides a vehicle, including a curtain assembly and a window. Figure 1 As shown, the curtain assembly includes a telescopic mechanism 100 and a curtain body. (Combined) Figure 1 as well as Figure 2 The telescopic mechanism 100 includes a fixed base 110, a fork arm assembly 120, and a connecting assembly 130. The window can be a windshield, a rear window, or a window on a door, or it can be a sunroof or a combination thereof.

[0039] Specifically, the fork arm assembly 120 includes a first support rod 121, a second support rod 122, and a rotating shaft 123. The first support rod 121 and the second support rod 122 are arranged crosswise, and the first support rod 121 is rotatably engaged with the second support rod 122 via the rotating shaft 123. One end of the first support rod 121 and one end of the second support rod 122 are movably connected to the fixed base 110. The other end of the first support rod 121 and the other end of the second support rod 122 are connected to the curtain body.

[0040] The connecting assembly 130 is movably mounted on the fixed base 110. When moving relative to the fixed base 110, the connecting assembly 130 drives the first support rod 121 and the second support rod 122 to rotate relative to each other, allowing the first support rod 121 and the second support rod 122 to move in directions that bring them closer together or further apart, thereby causing the curtain to unfold or retract. Specifically, when the curtain unfolds, it can cooperate with a vehicle window, such as the windshield, to provide sunshade. When the curtain retracts, it does not cover at least part of the window, allowing light to pass through. It should be noted that the movement of the connecting assembly 130 can be mechanically driven, manually driven, or electrically driven.

[0041] At least one of the first support rod 121 and the second support rod 122 is provided with a first connecting arm 1201 and a second connecting arm 1202. The first connecting arm 1201 and the second connecting arm 1202 are bent. One end of the first connecting arm 1201 is rotatably connected to the fixed base 110, and the other end is connected to the second connecting arm 1202. The end of the second connecting arm 1202 located away from the first connecting arm 1201 is connected and engaged with the curtain body.

[0042] To facilitate understanding, the lifting process of the connecting component 130 and the fork arm component 120 will be described in detail below.

[0043] like Figure 3 As shown, assume that the third direction Y is perpendicular to the first direction X1 and the second direction X2. The first direction X1 and the second direction X2 are set in opposite directions.

[0044] When the connecting assembly 130 engages with one end a of the first support rod 121, causing end a to move along the first direction X1, the rotation shaft 123 allows the first support rod 121 to be considered a lever structure. At this time, the other end b of the first support rod 121 moves along the second direction X2, increasing the length of the first support rod 121 in the third direction Y, thus enabling the first support rod 121 to extend the curtain. Correspondingly, the first support rod 121 also causes the second support rod 122 to move closer together. Specifically, one end c of the second support rod 122 moves along the second direction X2, gradually reducing the distance between end a and end c; the other end d of the second support rod 122 moves along the first direction X1, gradually reducing the distance between end b and end d. Ultimately, this increases the length of the fork arm assembly 120 in the third direction Y, thereby enabling the fork arm assembly 120 to extend the curtain.

[0045] When the connecting assembly 130 drives the first support rod 121 and the second support rod 122 to retract, the a end of the first support rod 121 moves along the second direction X2 driven by the connecting assembly 130, and the c end of the second support rod 122 moves along the first direction X1 driven by the connecting assembly 130. At this time, the connecting assembly 130 drives the a end of the first support rod 121 and the c end of the second support rod 122 to move away from each other, and the b end of the first support rod 121 and the d end of the second support rod 122 to move away from each other. That is, the fork arm assembly 120 gradually spreads apart, so that the length of the fork arm assembly 120 in the third direction Y is reduced.

[0046] Thus, the design of the first support rod 121 and the second support rod 122 enables their intersection to form a stable structure, effectively enhancing the load-bearing capacity and stability of the telescopic mechanism 100; with the cooperation of the rotating shaft 123, the first support rod 121 and the second support rod 122 can move flexibly in directions that are close to or far from each other, thereby achieving smooth telescopic extension and retraction of the curtain.

[0047] Furthermore, the connection component 130 allows the user to conveniently control the movement of the telescopic mechanism 100 by applying external force. The connection component 130 has a reasonable structural design, enabling it to be stably connected to the first support rod 121 or the second support rod 122 and to effectively transmit force, thereby achieving precise control of the telescopic mechanism 100.

[0048] Furthermore, at least one of the first support rod 121 and the second support rod 122 is provided with a first connecting arm 1201 and a second connecting arm 1202. That is, at least one of the first support rod 121 and the second support rod 122 is arranged in a near-L-shaped structure or an L-shaped structure, which is conducive to increasing the force arm. Thus, under the same lifting force of the connecting component 130, the increase in the force arm is conducive to improving the torque conversion rate of the fork arm assembly 120. This is conducive to improving the smoothness of the fork arm assembly 120 in opening and closing, ensuring the normal opening of the curtain, and meeting the needs of different users.

[0049] It should be noted that the rotational engagement between the first support rod 121 and the second support rod 122 and the fixed base 110 can be achieved through a rotating shaft or a movable structural component such as a tension spring. In one example, the first support rod 121 and the second support rod 122 of the fixed base 110 are rotatably engaged with the fixed base 110 through a rotating shaft.

[0050] In one embodiment, both the first support rod 121 and the second support rod 122 are provided with a first connecting arm 1201 and a second connecting arm 1202. Thus, the bent arrangement of the first connecting arm 1201 and the second connecting arm 1202 helps to strengthen the force-bearing arms of the first support rod 121 and the second support rod 122, thereby maximizing the torque conversion rate of the fork arm assembly 120, improving the smoothness of the fork arm assembly 120's deployment or retraction process, and requiring less effort.

[0051] Furthermore, unlike embodiments where only the first connecting arm 1201 and the second connecting arm 1202 are bent and connected on the first support rod 121 or the second support rod 122, in this embodiment, both the first support rod 121 and the second support rod 122 employ the same connection method for the first connecting arm 1201 and the second connecting arm 1202. This results in the following: Firstly, generally, when the first support rod 121 or the second support rod 122 is subjected to force alone, the force on the first support rod 121 or the second support rod 122 is unbalanced. When the external force applied to the first support rod 121 and the second support rod 122 remains unchanged, the first support rod 121 or the second support rod 122 needs to be provided with a longer lever arm to satisfy the unfolding or retracting movement of the fork arm assembly 120. The longer lever arm of the first support rod 121 or the second support rod 122 is mainly achieved through the length of the first connecting arm 1201 and the second connecting arm 1202. Based on this, in this embodiment, the first support rod 121 and the second support rod 122... Both have an L-shaped structure, which is beneficial for the force balance between the first support rod 121 and the second support rod 122, thereby reducing the force burden when the first support rod 121 or the second support rod 122 is subjected to a single force. At this time, it is not necessary to design the lever arm length of the first support rod 121 or the second support rod 122 to have a large difference. It can be deduced that there is no need to increase the length of the first connecting arm 1201 or the second connecting arm 1202 in the first support rod 121 or the second support rod 122, reducing the length difference between the first support rod 121 and the second support rod 122, and also realizing the unfolding or retracting movement of the fork arm assembly 120. This reduces the design difficulty and helps to reduce the risk of the fork arm assembly 120 easily scratching other components due to the excessive length of the first connecting arm 1201 and the second connecting arm 1202. On the other hand, it can ensure the force balance of the first support rod 121 and the second support rod 122, avoiding damage caused by uneven force between the supports.

[0052] Optionally, in one embodiment, the first support rod 121 and the second support rod 122 are of equal length. This ensures that the first support rod 121 and the second support rod 122 are in force balance, improving the stability of the fork arm assembly 120.

[0053] It should be noted that the fork arm assembly 120 in the above embodiments can be used for telescopic curtains, and can also be used for telescopic components such as blinds, without further limitations.

[0054] In one implementation, see back Figure 2 And see Figure 4 One end of the second connecting arm 1202 is bent into one end of the first connecting arm 1201. Specifically, the second connecting arm 1202 has a first end 1201a and a second end 1201b opposite to each other. The first end 1201a is connected and cooperates with the curtain body, and the second end 1201b is bent into one end of the first connecting arm 1201.

[0055] Furthermore, in one embodiment, such as Figure 4 As shown, the included angle between the first connecting arm 1201 and the second connecting arm 1202 is α, and 0° < α ≤ 90°. Here, the included angle α refers to the angle between the extension of the length direction of the first connecting arm 1201 and the extension of the length direction of the second connecting arm 1202, and α is the interior angle between the first connecting arm 1201 and the second connecting arm 1202. It can be understood that the included angle α between the first connecting arm 1201 and the second connecting arm 1202, being an acute angle or a right angle, helps to maximize the thrust component of the fork arm assembly 120 along the direction that drives the curtain to extend and retract, improving the force conversion rate of the fork arm assembly 120, thereby ensuring that the fork arm assembly 120 drives the curtain to extend smoothly.

[0056] In another embodiment, the first connecting arm 1201 and the second connecting arm 1202 are integrally formed. This integral forming of the first connecting arm 1201 and the second connecting arm 1202 improves the structural strength of the fork arm assembly 120, thereby enhancing the sliding stability of the fork arm assembly 120 on the fixed seat 110, and consequently improving the motion stability of the curtain's unfolding or retracting movement.

[0057] In another embodiment, see back Figure 1 The length of the first connecting arm 1201 is less than the length of the second connecting arm 1202. It is understood that the length of the second connecting arm 1202 determines the maximum distance the fork arm assembly 120 can extend. Therefore, by making the first connecting arm 1201 shorter than the second connecting arm 1202, the lever arm length can be increased while the second connecting arm 1202 can extend to a sufficiently large distance to raise the curtain to a adequate height.

[0058] It should be noted that the movable engagement of the connecting component 130 on the fixed base 110 in the above embodiments can be, but is not limited to, a sliding engagement or a rotational engagement. Furthermore, when the connecting component 130 triggers the first support rod 121 and the second support rod 122, the triggering can be simultaneous or not simultaneous, and no further restrictions are imposed here.

[0059] In some embodiments, combined with Figure 5 as well as Figure 6As shown, the connecting assembly 130 includes a first slider 131 and a second slider 132, which are slidably disposed on the fixed base 110. One of the first slider 131 and the second slider 132 is rotatably connected to the first support rod 121, and the other of the first slider 131 and the second slider 132 is rotatably connected to the second support rod 122. At this time, the first slider 131 and the second slider 132 slide along the fixed base 110 under the action of external force, so that the first support rod 121 and the second support rod 122 can respectively drive the first support rod 121 and the second support rod 122 to switch between moving closer to each other and moving further away from each other.

[0060] Thus, the first slider 131 and the second slider 132 can slide on the fixed seat 110 under force. The change in the distance between the first slider 131 and the second slider 132 drives the fork arm assembly 120 to unfold or retract. Unlike directly lifting and engaging the connecting component 130 of the first support rod 121 and the second support rod 122, the first slider 131 and the second slider 132 have less movement resistance relative to the fixed seat 110, which facilitates a smoother unfolding or retraction of the fork arm assembly 120, making the process of the fork arm assembly 120 driving the curtain to unfold or retract more smoothly and effortlessly.

[0061] Furthermore, the first slider 131 and the second slider 132 slide on the fixed base 110, which allows the connecting assembly 130 to be subjected to external forces in a directional manner, reducing the generation of external forces in other directions. Thus, under the same external force, the movement of the first support rod 121 and the second support rod 122 driven by the first slider 131 and the second slider 132 respectively can improve the force conversion rate of the fork arm assembly 120, making it easier to connect the connecting assembly 130 with less effort.

[0062] Furthermore, in one embodiment, the fixed base 110 is provided with a guide rail. The guide rail is arranged along the sliding direction of the first slider 131 and the second slider 132, and the connecting assembly 130 is slidably engaged with the guide rail, so that the connecting assembly 130 slides in a direction closer to or further away from the fork arm assembly 120. In this way, the sliding and limiting engagement between the guide rail and the connecting assembly 130 helps to improve the movement stability of the connecting assembly 130, thereby improving the extension and retraction stability of the fork arm assembly 120.

[0063] In the above embodiments, the rotational connection between the first slider 131 and the first support rod 121, and the rotational connection between the second slider 132 and the second support rod 122, can be achieved through a rotating shaft or through a connecting rod assembly, etc., without further limitation.

[0064] It should be noted that the movement of the connecting component 130 in the above embodiments can be electrically driven, manually driven, or manually operated. Furthermore, the driving method can be, but is not limited to, linear drive, and can also be a method that converts rotational motion into linear drive.

[0065] In conjunction with any embodiment of the connection component 130, see back Figure 5 The telescopic mechanism 100 also includes a drive assembly 140, which includes a drive motor 141 and a transmission assembly 142. The transmission assembly 142 is connected to the drive motor 141 and is also connected to the first slider 131 and the second slider 132. The drive motor 141 drives the first slider 131 and the second slider 132 to slide in opposite directions via the transmission assembly 142. Thus, the drive assembly 140 eliminates the need for manual pushing or pulling of the connecting assembly 130 to extend or retract the fork arm assembly 120, making operation more convenient and labor-saving, and improving the user experience.

[0066] Furthermore, the transmission assembly 142 can convert the rotational motion of the drive motor 141 into linear motion that drives the connecting assembly 130 to extend and retract. Unlike directly driving the connecting assembly 130 through a cylinder, the cooperation between the drive motor 141 and the transmission assembly 142 allows the travel of the connecting assembly 130 to be adjustable, enabling the fork arm assembly 120 to extend and retract by different distances, and consequently, the curtain assembly to extend and retract to different lengths.

[0067] It should be noted that the transmission component 142 may include, but is not limited to, gear transmission, chain transmission or belt transmission, and the specific form can be selected and designed according to actual needs.

[0068] In some implementations, see back Figure 6 The transmission assembly 142 includes a driving rotating member 1421, a driven rotating member 1422, and a flexible transmission member 1423. A drive motor 141 is connected to the driving rotating member 1421 to drive its rotation. The flexible transmission member 1423 has a first side 1423a and a second side 1423b arranged opposite to each other. A first slider 131 is connected to the first side 1423a, and a second slider 132 is connected to the second side 1423b, such that the first slider 131 and the second slider 132 slide synchronously in opposite directions.

[0069] It is understandable that when the drive motor 141 rotates, it can drive the flexible transmission component 1423 and the driven transmission component 1422 to rotate synchronously through the active rotating component 1421. At this time, the two sides of the flexible transmission component 1423 will have different rotation directions. By setting the first slider 131 and the second slider 132 on opposite sides of the flexible transmission component 1423, the first slider 131 and the second slider 132 can move synchronously and in opposite directions. This is beneficial for the fork arm assembly 120 to move closer or further away from each other at the same time, so as to drive the curtain to rise and fall synchronously. In addition, the transmission cooperation between the flexible transmission component 1423 and the drive motor 141, due to the certain deformation performance of the flexible transmission component 1423, can absorb part of the impact and vibration during the transmission cooperation process, reduce the mechanical stress on the first slider 131 and the second slider 132, and improve the smoothness of the movement of the fork arm assembly 120.

[0070] In other embodiments, the drive assembly 140 includes two opposing drive motors 141, and the transmission assembly 142 includes a first turbine, a second turbine, a first worm, and a second worm. The first and second turbines are fixedly connected to the output shafts of the two drive motors 141, respectively. One end of the first worm is screwed into the first turbine, enabling the first worm to convert rotational motion into telescopic motion relative to the first turbine. The other end of the first worm is connected to the first slider 131, driving the first slider 131 to move along a first direction X1 or a second direction X2. One end of the second worm is screwed into the second turbine, enabling the second worm to convert rotational motion into telescopic motion relative to the second turbine. The other end of the second worm is connected to the second slider 132, driving the second slider 132 to move along a second direction X2 or a first direction X1. Thus, the reverse meshing of the double gears improves the accuracy of the transmission, thereby improving the accuracy and stability of the movement of the curtain driven by the fork arm assembly 120.

[0071] In some embodiments, see back Figure 6 The connecting assembly 130 also includes a first limiting member 133, which is connected to the fixed base 110 and is used to abut and limit the movement of at least one of the first slider 131 and the second slider 132. Thus, when the first slider 131 or the second slider 132 slides to a preset position, the first limiting member 133 can effectively prevent it from continuing to slide, thereby ensuring the stability and accuracy of the telescopic mechanism 100 during extension or retraction. This limiting design not only improves the operational safety of the telescopic mechanism 100 but also helps to extend its service life.

[0072] In one example, the first limiting member 133 can be disposed between the first side 1423a and the second side 1423b, and the flexible transmission member 1423 can slide relative to the first limiting member 133. In this way, when the first slider 131 and the second slider 132 move to the preset position, they can be abutted and limited to prevent further sliding, thereby maximizing the accuracy of the lifting stroke control of the fork arm assembly 120.

[0073] It should be noted that the number of fork arm assemblies 120 can be one or more, and no further restrictions are imposed here.

[0074] In one embodiment, see back Figure 4 The telescopic mechanism 100 includes at least two fork arm assemblies 120 and at least two connecting assemblies 130, with each fork arm assembly 120 and connecting assembly 130 corresponding to the other. One end of each of the at least two fork arm assemblies 120 is connected to the curtain body, and the at least two fork arm assemblies 120 are spaced apart. In this way, the at least two fork arm assemblies 120 support the movement of the curtain body, which can improve the stability of the curtain body's movement.

[0075] In addition, in some implementations, see back Figure 1 The telescopic mechanism 100 also includes a second limiting member 150, which is disposed on the fixed base 110 and between two adjacent fork arm assemblies 120. The second limiting member 150 is used for the adjacent connecting assemblies 130 to abut and limit the engagement.

[0076] Thus, when two adjacent fork arm assemblies 120 are in the extended state, the first support rod 121 corresponding to one fork arm assembly 120 and the second support rod 122 corresponding to the other fork arm assembly 120 can abut and limit the second limiting member 150, thereby preventing the two adjacent fork arm assemblies 120 from interfering with each other during the extension process, ensuring the stability of the movement of the fork arm assembly 120, and improving the operational safety of the telescopic mechanism 100.

[0077] In one embodiment, the second limiting member 150 may be integrally formed with the first limiting member 133 in the above embodiment.

[0078] In some embodiments, to improve the movement stability of the curtain, see back Figure 1 as well as Figure 3The telescopic mechanism 100 also includes a support rod 160. The support rod 160 is connected to one side of the curtain, and the other side of the curtain is connected to the fixed base 110. The support rod 160 is connected to the end of the fork arm assembly 120 located away from the fixed base 110. Thus, both sides of the curtain can be connected and cooperate with the telescopic mechanism 100. Generally, the curtain often adopts a flexible structure. Based on this, by connecting both sides of the curtain to the fixed base 110 and the support rod 160 respectively, the fork arm assembly 120 drives the extension and retraction of the support rod 160, thereby changing the distance between the support rod 160 and the fixed base 110, thus realizing the unfolding and retraction of the curtain. This improves the support strength of the telescopic mechanism 100 for the curtain, thereby improving the movement stability of the curtain.

[0079] Furthermore, in one embodiment, the fork arm assembly 120 further includes a third support rod 124 and a fourth support rod 125. One end of the third support rod 124 is rotatably connected to the first support rod 121, and the other end of the third support rod 124 is rotatably connected to the support rod 160. One end of the fourth support rod 125 is rotatably connected to the second support rod 122, and the other end of the fourth support rod 125 is rotatably connected to the support rod 160. It can be understood that the rotatable connection between the third support rod 124 and the first support rod 121, and the rotatable connection between the fourth support rod 125 and the second support rod 122, can increase the lever arm length of the first support rod 121 and the second support rod 122, thereby making the movement of the first support rod 121 and the second support rod 122 more effortless, and thus improving the efficiency and smoothness of the movement of the curtain driven by the fork arm assembly 120.

[0080] In other embodiments, to improve the aesthetics of the curtain assembly and the vehicle window, the telescopic mechanism 100 further includes a roller assembly connected to the fixed base 110. The side of the curtain away from the support rod 160 is wound around the roller assembly. That is, when the fork arm assembly 120 extends the support rod 160 away from the fixed base 110, the curtain drives the roller assembly to rotate in the forward direction (e.g., clockwise) to increase the curtain's coverage length on the vehicle window, thereby achieving a sunshade function. Correspondingly, when the fork arm assembly 120 retracts the support rod 160 towards the fixed base 110, the curtain drives the roller assembly to rotate in the reverse direction (e.g., counterclockwise) to reduce the curtain's coverage area on the vehicle window, thereby achieving curtain assembly retraction. Thus, the roller assembly facilitates better curtain storage during unfolding or retraction, avoids curtain stacking, prevents obstruction of the curtain assembly and visibility, and ensures the vehicle's aesthetics.

[0081] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0082] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

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

[0084] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0085] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0086] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0087] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A telescopic mechanism, characterized in that, The telescopic mechanism includes: Fixed base; The fork arm assembly includes a first support rod, a second support rod, and a rotating shaft. The first support rod and the second support rod are arranged crosswise, and the first support rod is rotatably engaged with the second support rod through the rotating shaft. Both the first support rod and the second support rod are movably connected to the fixed base. A connecting assembly, movably mounted on the fixed base, is used to drive the first support rod and the second support rod to rotate relative to each other when moving relative to the fixed base; wherein... At least one of the first support rod and the second support rod is provided with a first connecting arm and a second connecting arm; the first connecting arm and the second connecting arm are bent; one end of the first connecting arm is rotatably connected to the fixed base, and the other end of the first connecting arm is connected to the second connecting arm.

2. The telescopic mechanism according to claim 1, characterized in that, The first connecting arm has a first end and a second end along its length; the first end is used to rotate with the fixed base, and the second end is bent and connected to the second connecting arm. And / or, the first connecting arm and the second connecting arm are integrally formed.

3. The telescopic mechanism according to claim 1, characterized in that, The angle between the first connecting arm and the second connecting arm is α, and 0° < α ≤ 90°; And / or, the length of the first connecting arm is less than the length of the second connecting arm.

4. The telescopic mechanism according to claim 1, characterized in that, The connecting assembly includes a first slider and a second slider, one of which is rotatably connected to the first support rod, and the other of which is rotatably connected to the second support rod; the first slider and the second slider are slidably disposed on the fixed base.

5. The telescopic mechanism according to claim 4, characterized in that, The telescopic mechanism further includes a drive assembly, which includes a drive motor and a transmission assembly. The transmission assembly is connected to the drive motor and is also connected to the first slider and the second slider. The drive motor drives the first slider and the second slider to slide in opposite directions through the transmission assembly.

6. The telescopic mechanism according to claim 5, characterized in that, The transmission assembly includes an active rotating component, a driven rotating component, and a flexible transmission component. The drive motor is connected to the active rotating component to drive the active rotating component to rotate. The flexible transmission component is rotatably connected between the active rotating component and the driven rotating component. The flexible transmission component has a first side and a second side that are arranged opposite to each other. The first slider is connected to the first side, and the second slider is connected to the second side, so that the first slider and the second slider slide synchronously in opposite directions.

7. The telescopic mechanism according to claim 4, characterized in that, The connecting assembly further includes a first limiting member, which is connected to the fixed base and is used to engage with at least one of the first slider and the second slider for limiting engagement.

8. The telescopic mechanism according to claim 1, characterized in that, The telescopic mechanism further includes a support rod; the support rod is used to connect to one side of the curtain body, and the other side of the curtain body is connected to the fixed seat; wherein, the support rod is connected to the end of the fork arm assembly located away from the fixed seat.

9. The telescopic mechanism according to claim 8, characterized in that, The fork arm assembly further includes a third support rod and a fourth support rod; one end of the third support rod is rotatably connected to the first support rod, and the other end of the third support rod is connected to the support rod; one end of the fourth support rod is rotatably connected to the second support rod, and the other end of the fourth support rod is connected to the support rod. And / or, the telescopic mechanism further includes a roller member connected to the fixed base, and the side of the curtain away from the support rod is wound around the roller member.

10. The telescopic mechanism according to any one of claims 1 to 9, characterized in that, The telescopic mechanism includes at least two fork arm assemblies and at least two connecting assemblies, with each fork arm assembly and each connecting assembly being arranged in a one-to-one correspondence; the at least two fork arm assemblies are arranged at intervals.

11. The telescopic mechanism according to claim 10, characterized in that, The telescopic mechanism further includes a second limiting member, which is disposed on the fixed base and between two adjacent fork arm assemblies. The second limiting member is used to abut and limit the two adjacent connecting assemblies.

12. A curtain assembly, characterized in that, The device includes a curtain body and a telescopic mechanism as described in any one of claims 1 to 11, wherein the curtain body is connected to one end of the first support rod and the second support rod located away from the fixed base.

13. A vehicle, characterized in that, Includes a vehicle window and the curtain assembly as described in claim 12, the curtain assembly being extendable and retractable on the vehicle window to cooperate with at least a portion of the vehicle window covering.

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