Driving mechanism, folding screen and vehicle

Abstract

The utility model discloses a driving mechanism, a folding screen and a vehicle, the driving mechanism comprises a base, a swing arm, a transmission shaft and a driving device, the swing arm is used for connecting the screen, and the swing arm is rotatably installed on the base; one of the transmission shaft and the swing arm is provided with a first mounting hole, the other one of the transmission shaft and the swing arm is provided with an overload protection elastic sleeve, the overload protection elastic sleeve is located in the first mounting hole, and the transmission shaft, the swing arm and the overload protection elastic sleeve form friction transmission; the driving device is installed on the machine base and is in transmission connection with the transmission shaft. According to the driving mechanism provided by the utility model, through the arrangement of the overload protection elastic sleeve, an overload protection effect is achieved when the driving mechanism is overloaded, and the condition that the driving mechanism is damaged due to overload is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of folding screens, and in particular to an active mechanism, a folding screen and a vehicle. Background Art

[0002] Folding screens are currently being used in some applications, such as those mounted on vehicle roofs. These devices typically rely on an active mechanism to rotate the screen to the desired angle. However, in practice, the screen may be obstructed by human bodies or other objects while rotating. This mechanism still drives the screen, causing overload and damage to the active mechanism, which can also damage the screen due to excessive force. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an active mechanism that provides an overload protection elastic sleeve to provide overload protection when the active mechanism is overloaded, thereby preventing the active mechanism from being damaged by overload.

[0004] The utility model also provides a folding screen having the above active mechanism.

[0005] The utility model also provides a vehicle with the above-mentioned folding screen.

[0006] According to the first aspect of the embodiment of the utility model, the active mechanism includes a base, a swing arm, a transmission shaft and a driving device, the swing arm is used to connect the screen, and the swing arm is rotatably installed on the base; the transmission shaft and one of the swing arm are provided with a first mounting hole, and the other is provided with an overload protection elastic sleeve, the overload protection elastic sleeve is located in the first mounting hole, and the transmission shaft, the swing arm and the overload protection elastic sleeve form a friction transmission; the driving device is installed on the base, and the driving device is connected to the transmission shaft in a transmission manner.

[0007] According to the active mechanism of the embodiment of the present utility model, there are at least the following beneficial effects: through the provision of the overload protection elastic sleeve, when the swing arm is overloaded, the rotational resistance encountered by the swing arm is greater than the maximum friction force that can be generated by the cooperation of the transmission shaft, the swing arm and the overload protection elastic sleeve. As a result, the transmission shaft can rotate relative to the swing arm, thereby playing an overload protection role, avoiding overload damage to the driving device, transmission shaft and other components of the active mechanism.

[0008] According to some embodiments of the present invention, the overload protection elastic sleeve protrudes outward to form a plurality of elastic protrusions, and the elastic protrusions abut against the inner wall of the first mounting hole.

[0009] According to some embodiments of the present invention, all of the elastic protrusions are arranged in a strip shape along the axial direction of the overload protection elastic sleeve, and all of the elastic protrusions are distributed circumferentially around the axial direction of the overload protection elastic sleeve. The peripheral wall of the overload protection elastic sleeve is provided with an avoidance opening along its axial direction, and the avoidance opening is located between two adjacent elastic protrusions.

[0010] According to some embodiments of the present invention, the base is provided with a second mounting hole, one end of the swing arm is rotatably mounted on the second mounting hole, the first mounting hole is provided at one end of the swing arm, and the transmission shaft is inserted into the first mounting hole.

[0011] According to some embodiments of the present invention, a damping device is included, and the damping device is arranged between the transmission shaft and the machine base, or the damping device is arranged between the swing arm and the machine base.

[0012] According to some embodiments of the present invention, the damping device includes a damper, which is located on the side of the transmission shaft away from the swing arm, and the damper is installed on the machine base and acts on the transmission shaft; or, the damping device includes an elastic clamping sleeve and a damping sleeve, one end of the swing arm is inserted into the damping sleeve and abuts against the damping sleeve, the damping sleeve is inserted into the elastic clamping sleeve, the elastic clamping sleeve is installed in the second mounting hole, and the damping sleeve is fixed to the machine base.

[0013] According to some embodiments of the present utility model, the driving device includes a motor, a first worm, a first turbine, a second worm and a planetary gear reducer, the motor is installed on the machine base, the first worm is arranged on the output shaft of the motor, the first worm is matched with the first turbine for transmission, the first turbine is installed on the second worm to drive the second worm to rotate, the second worm is rotatably installed on the machine base, the second worm is transmission-connected to the planetary gear reducer, and the planetary gear reducer is coaxially arranged and transmission-connected to the transmission shaft.

[0014] According to some embodiments of the present utility model, the driving device includes a motor, a first worm, a first turbine and a second worm, the motor is installed on the machine base, the first worm is arranged on the output shaft of the motor, the first worm is matched with the first turbine for transmission, the first turbine is installed on the second worm to drive the second worm to rotate, the second worm is rotatably installed on the machine base, the transmission shaft is installed with a transmission member, and the transmission member is engaged with the second worm for transmission.

[0015] The folding screen according to the second embodiment of the present invention includes the above-mentioned active mechanism and the screen, and the screen is connected to the swing arm.

[0016] The folding screen according to the embodiment of the present invention has at least the following beneficial effects: by adopting the above-mentioned active mechanism, if the screen is blocked and overloaded during the rotation of the screen, the transmission shaft and the swing arm of the active mechanism will rotate relative to each other, thereby playing an overload protection role, avoiding overload damage to the active mechanism, and also avoiding damage to the screen.

[0017] A vehicle according to an embodiment of the third aspect of the present utility model includes the above-mentioned folding screen.

[0018] The vehicle according to the embodiment of the utility model has at least the following beneficial effects: by adopting the above-mentioned folding screen, if the screen is blocked and overloaded during the rotation of the folding screen, the transmission shaft and the swing arm of the active mechanism will rotate relative to each other, thereby playing an overload protection role and avoiding overload damage to the active mechanism and screen of the folding screen.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 Schematic diagram of the active mechanism of some embodiments of the present invention;

[0022] Figure 2 for Figure 1 An exploded view of the active mechanism is shown;

[0023] Figure 3 for Figure 1 A schematic diagram of an overload protection elastic sleeve of an active mechanism is shown;

[0024] Figure 4 Schematic diagrams of active mechanisms of other embodiments of the present invention;

[0025] Figure 5 for Figure 4 An exploded view of the active mechanism is shown;

[0026] Figure 6 Schematic diagram of a folding screen according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] Reference numerals:

[0029] Machine base 110, second mounting hole 111, swing arm 120, first mounting hole 121, transmission shaft 130, driving device 140, motor 141, output shaft 1411, first worm 142, first turbine 143, second worm 144, planetary gear reducer 145, transmission member 146, overload protection elastic sleeve 150, elastic protrusion 151, avoidance opening 152, damping device 160, damper 160a, elastic clamping sleeve 161, damping sleeve 162, screen 200, mounting bracket 300, driven mechanism 400, locking mechanism 500. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Reference Figures 1 to 5According to the first aspect of the utility model, the driving mechanism comprises a base 110, a swing arm 120, a transmission shaft 130 and a driving device 140, the swing arm 120 is used for connecting a screen 200, and the swing arm 120 is rotatably installed on the base 110; one of the transmission shaft 130 and the swing arm 120 is provided with a first mounting hole 121, and the other is provided with an overload protection elastic sleeve 150, the overload protection elastic sleeve 150 is located in the first mounting hole 121, and the transmission shaft 130, the swing arm 120 and the overload protection elastic sleeve 150 form a friction transmission; the driving device 140 is installed on the base 110, and the driving device 140 is in transmission connection with the transmission shaft 130.

[0035] During the working process of the driving mechanism, when the swing arm 120 is not overloaded, the rotation resistance received by the swing arm 120 is less than or equal to the maximum friction force that can be generated by the cooperation of the transmission shaft 130, the swing arm 120 and the overload protection elastic sleeve 150, so that the transmission shaft 130 and the swing arm 120 cannot rotate relatively, and then the driving device 140 can drive the transmission shaft 130 to rotate synchronously with the swing arm 120; when the swing arm 120 is overloaded, the rotation resistance received by the swing arm 120 is greater than the maximum friction force that can be generated by the cooperation of the transmission shaft 130, the swing arm 120 and the overload protection elastic sleeve 150, so that the transmission shaft 130 can rotate relatively to the swing arm 120, so that the rotation resistance received by the transmission shaft 130 will not be greater than the maximum friction force that can be generated by the cooperation of the transmission shaft 130, the swing arm 120 and the overload protection elastic sleeve 150, thereby avoiding the damage of the transmission shaft 130 and the driving device 140 and other components caused by excessive force.

[0036] The driving mechanism provided by the utility model, through the setting of the overload protection elastic sleeve 150, when the driving mechanism is overloaded, the rotation resistance received by the swing arm 120 is greater than the maximum friction force that can be generated by the cooperation of the transmission shaft 130, the swing arm 120 and the overload protection elastic sleeve 150, so that the transmission shaft 130 can rotate relatively to the swing arm 120, thereby playing an overload protection role, avoiding the overload damage of the driving device 140, the transmission shaft 130 and other components of the driving mechanism, in addition, the overload protection is realized through the overload protection elastic sleeve 150, and the overload protection scheme is simple in structure and convenient to install.

[0037] Referring to Figure 2 and Figure 3According to some embodiments of the present invention, the overload protection elastic sleeve 150 protrudes outward to form a plurality of elastic protrusions 151, and the elastic protrusions 151 abut against the inner wall of the first mounting hole 121, so that the swing arm 120 and the transmission shaft 130 cooperate with each other to clamp and squeeze the overload protection elastic sleeve 150, thereby generating friction. The maximum value of the friction force will be affected by factors such as the number and protrusion height of the elastic protrusions 151. Therefore, according to actual needs, the overload protection elastic sleeve 150 with different numbers of elastic protrusions 151 and different protrusion heights of the elastic protrusions 151 can be replaced to meet the overload protection requirements of the active mechanism in different situations.

[0038] Reference Figure 3 According to some embodiments of the present invention, all elastic protrusions 151 are arranged in a strip shape along the axial direction of the overload protection elastic sleeve 150, and all elastic protrusions 151 are distributed circumferentially around the axial direction of the overload protection elastic sleeve 150. With the above arrangement, the overload protection elastic sleeve 150 is easy to form, and the number and protrusion height of the elastic protrusions 151 are easy to control. The peripheral wall of the overload protection elastic sleeve 150 is provided with an avoidance opening 152 along its axial direction. The avoidance opening 152 is located between two adjacent elastic protrusions 151. The arrangement of the avoidance opening 152 can facilitate the installation of the overload protection elastic sleeve 150 on the one hand, and provide space for the deformation of the overload protection elastic sleeve 150 on the other hand, so that the overload protection elastic sleeve 150 can work more smoothly.

[0039] Reference Figure 2 and Figure 5 According to some embodiments of the present invention, the base 110 defines a second mounting hole 111, one end of the swing arm 120 is rotatably mounted in the second mounting hole 111, a first mounting hole 121 is provided at one end of the swing arm 120, and the transmission shaft 130 is inserted into the first mounting hole 121, wherein the first mounting hole 121 and the second mounting hole 111 are coaxially arranged. This arrangement facilitates the installation of the swing arm 120 and the transmission shaft 130, and allows the swing arm 120 to rotate smoothly.

[0040] Reference Figure 5 According to some embodiments of the present invention, a limiting structure is provided between the side wall of the second mounting hole 111 and the swing arm 120 to limit the rotation angle of the swing arm 120. Specifically, in some embodiments, the limiting structure includes an arcuate limiting groove (not shown) and a limiting protrusion 122. The arcuate limiting groove can be provided on the side wall at one end of the second mounting hole 111, and the limiting protrusion 122 is provided on the outer periphery of the swing arm 120. The limiting protrusion 122 is located in the arcuate limiting groove and can rotate along the arcuate limiting groove. Of course, in other embodiments, the above-mentioned limiting protrusion 122 can also be provided on the side wall at one end of the second mounting hole 111, and the arcuate limiting groove is provided on the swing arm 120.

[0041] ReferenceFigure 2 and Figure 5 According to some embodiments of the present invention, the active mechanism further includes a damping device 160, which is disposed between the transmission shaft 130 and the base 110, or between the swing arm 120 and the base 110. Thus, the damping device 160 transmits a damping force to the transmission shaft 130 or the swing arm 120. When the driving device 140 stops working, the damping force provided by the damping device 160 becomes a rotational resistance to the swing arm 120, thereby limiting the rotation of the swing arm 120 and causing the swing arm 120 to hover.

[0042] Reference Figure 2 According to some embodiments of the present invention, the damping device 160 includes a damper 160a. The damper 160a is located on the side of the transmission shaft 130 facing away from the swing arm 120. The damper 160a is mounted on the base 110 and acts on the transmission shaft 130. The damping device 160 utilizes an external damper 160a, which facilitates disassembly, assembly, and replacement of the damper 160a, allowing selection of a damper 160a with a desired damping force according to actual needs. In specific implementations, the damper 160a can be a mechanical damper 160a or a magnetic damper 160a.

[0043] Reference Figure 5 According to some embodiments of the present invention, damping device 160 includes an elastic clamping sleeve 161 and a damping sleeve 162. One end of swing arm 120 is inserted into and abuts against damping sleeve 162. Damping sleeve 162 is inserted into elastic clamping sleeve 161, which is installed in second mounting hole 111. Damping sleeve 162 is fixed to base 110. As a result, damping device 160 directly acts on swing arm 120 and, through damping sleeve 162, positions and supports swing arm 120, ensuring more stable rotation of swing arm 120. Furthermore, the entire damping device 160 is built into second mounting hole 111, saving installation space and making the entire active mechanism compact.

[0044] Reference Figure 2According to some embodiments of the present invention, the drive device 140 includes a motor 141, a first worm 142, a first turbine 143, a second worm 144, and a planetary gear reducer 145. The motor 141 is mounted on the base 110, and the first worm 142 is disposed on the output shaft 1411 of the motor 141. The first worm 142 and the first turbine 143 are in driving engagement with each other. The first turbine 143 is mounted on the second worm 144 to drive the second worm 144 to rotate. The second worm 144 is rotatably mounted on the base 110. The second worm 144 is in driving connection with the planetary gear reducer 145. The planetary gear reducer 145 is coaxially disposed and in driving connection with the transmission shaft 130. The planetary gear reducer 145 is mounted on the second mounting hole 111. The addition of the planetary gear reducer 145 to the drive device 140 can achieve a larger transmission ratio to meet various rotational speed and torque requirements.

[0045] Compared to conventional gear reducers, the planetary gear reducer 145 employed in the present invention has the following advantages: First, it is small and lightweight. Given the same transmission ratio, the planetary gear reducer 145 is more compact than conventional gear mechanisms, enabling high-power transmission within a smaller space while also being lighter. Second, it boasts a wide transmission ratio range. It can achieve a large transmission ratio, with a single-stage transmission ratio of up to 10. Through multi-stage combinations, the transmission ratio can reach even higher values, meeting various speed and torque requirements. Third, it boasts a high load-bearing capacity. In the planetary gear reducer 145, multiple planetary gears are evenly distributed around the central gear, sharing the load and reducing the load on each gear. This allows the planetary gear reducer 145 to withstand high input power and is suitable for heavy-duty operating environments. Fourth, it boasts smooth operation. Because multiple planetary gears engage simultaneously, the planetary gear reducer 145 achieves a more uniform power input and output during operation, reducing vibration and noise and ensuring smoother operation.

[0046] Reference Figure 5According to some embodiments of the present invention, the driving device 140 may also adopt other settings. For example, the driving device 140 includes a motor 141, a first worm 142, a first turbine 143 and a second worm 144. The motor 141 is installed on the machine base 110, and the first worm 142 is arranged on the output shaft 1411 of the motor 141. The first worm 142 is matched with the first turbine 143 for transmission. The first turbine 143 is installed on the second worm 144 to drive the second worm 144 to rotate. The second worm 144 is rotatably installed on the machine base 110, and the transmission shaft 130 is installed with a transmission member 146, which meshes with the second worm 144 for transmission. By adopting this setting method, the setting of the planetary gear reducer 145 can be eliminated, the components of the active mechanism can be reduced, and the space occupied by the driving device 140 can be reduced, thereby reducing the installation space required for the active mechanism as a whole, which is suitable for scenarios with large space limitations. During the specific implementation process, the transmission member 146 is configured as a semi-turbine member, and the arrangement range of the turbine teeth on the transmission member 146 for cooperating with the second worm 144 is less than 360 degrees. As a result, the activity space required for the transmission member 146 can be reduced, thereby further reducing the installation space required for the active mechanism as a whole. In addition, the angle range of the second worm 144 driving the transmission member 146 to rotate can also be limited, thereby limiting the rotation range of the swing arm 120 and avoiding exceeding the rotation angle limit of the swing arm 120.

[0047] Reference Figure 6 The folding screen according to the second embodiment of the present invention includes the above-mentioned active mechanism and the screen 200, and the screen 200 is connected to the swing arm 120.

[0048] By adopting the above-mentioned active mechanism, if the screen 200 is blocked and overloaded during its rotation, the transmission shaft 130 and the swing arm 120 of the active mechanism will rotate relative to each other, thereby playing an overload protection role, avoiding overload damage to the active mechanism and also avoiding damage to the screen 200.

[0049] Reference Figure 6 In the specific implementation process, the folding screen includes a mounting frame 300, and the base 110 of the active mechanism is installed on the mounting frame 300. In order to ensure the smooth rotation of the screen 200 and control costs, an active mechanism is set. One end of the screen 200 is fixedly connected to the swing arm 120 of the active mechanism, and the other end of the screen 200 is rotatably mounted on the mounting frame 300 through the driven mechanism 400. The driven mechanism 400 can be configured with an angle detection device to detect the rotation angle of the screen 200.

[0050] Reference Figure 6In some embodiments, the folding screen includes a locking mechanism 500, which is located on one side of the screen 200. When the screen 200 is rotated to the storage position, the locking mechanism 500 works to lock the screen 200 in the storage position.

[0051] A vehicle according to an embodiment of the third aspect of the present utility model includes the above-mentioned folding screen.

[0052] By adopting the above-mentioned folding screen, if the screen 200 of the folding screen is blocked and overloaded during the rotation of the screen 200, the transmission shaft 130 and the swing arm 120 of the active mechanism will rotate relative to each other, thereby playing an overload protection role and avoiding overload damage to the active mechanism and screen 200 of the folding screen.

[0053] During the specific implementation process, the folding screen can be installed on the roof of the vehicle. Of course, the folding screen can also be installed at other locations on the vehicle. For example, the folding screen can be installed on the back of a seat in the vehicle.

[0054] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0055] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An active mechanism, characterized in that: include: Machine base (110); A swing arm (120) is used to connect to the screen (200), and the swing arm (120) is rotatably mounted on the base (110); A transmission shaft (130), wherein one of the transmission shaft (130) and the swing arm (120) is provided with a first mounting hole (121), and the other is provided with an overload protection elastic sleeve (150), wherein the overload protection elastic sleeve (150) is located in the first mounting hole (121), and the transmission shaft (130), the swing arm (120) and the overload protection elastic sleeve (150) form a friction transmission; A driving device (140) is installed on the machine base (110), and the driving device (140) is in transmission connection with the transmission shaft (130).

2. The active mechanism according to claim 1, characterized in that: The overload protection elastic sleeve (150) protrudes outward to form a plurality of elastic protrusions (151), and the elastic protrusions (151) abut against the inner wall of the first mounting hole (121).

3. The active mechanism according to claim 2, characterized in that: All of the elastic protrusions (151) are arranged in a strip shape along the axial direction of the overload protection elastic sleeve (150), and all of the elastic protrusions (151) are distributed circumferentially around the axial direction of the overload protection elastic sleeve (150). A circumferential wall of the overload protection elastic sleeve (150) is provided with an escape opening (152) along its axial direction, and the escape opening (152) is located between two adjacent elastic protrusions (151).

4. The active mechanism according to claim 1, characterized in that: The machine base (110) is provided with a second mounting hole (111), one end of the swing arm (120) is rotatably mounted in the second mounting hole (111), the first mounting hole (121) is provided at one end of the swing arm (120), and the transmission shaft (130) is inserted into the first mounting hole (121).

5. The active mechanism according to claim 4, characterized in that: The invention comprises a damping device (160), wherein the damping device (160) is arranged between the transmission shaft (130) and the machine base (110), or the damping device (160) is arranged between the swing arm (120) and the machine base (110).

6. The active mechanism according to claim 5, characterized in that: The damping device (160) includes a damper (160a), the damper (160a) is located on a side of the transmission shaft (130) away from the swing arm (120), the damper (160a) is mounted on the machine base (110) and acts on the transmission shaft (130); or, The damping device (160) includes an elastic clamping sleeve (161) and a damping sleeve (162); one end of the swing arm (120) is inserted into the damping sleeve (162) and abuts against the damping sleeve (162); the damping sleeve (162) is inserted into the elastic clamping sleeve (161); the elastic clamping sleeve (161) is installed in the second mounting hole (111); and the damping sleeve (162) is fixed to the machine base (110).

7. The active mechanism according to claim 1, characterized in that: The driving device (140) includes a motor (141), a first worm (142), a first turbine (143), a second worm (144) and a planetary gear reducer (145); the motor (141) is mounted on the machine base (110); the first worm (142) is arranged on the output shaft (1411) of the motor (141); the first worm (142) and the first turbine (143) are transmission-coordinated; the first turbine (143) is mounted on the second worm (144) to drive the second worm (144) to rotate; the second worm (144) is rotationally mounted on the machine base (110); the second worm (144) is transmission-connected to the planetary gear reducer (145); and the planetary gear reducer (145) is coaxially arranged and transmission-connected to the transmission shaft (130).

8. The active mechanism according to claim 1, characterized in that: The driving device (140) includes a motor (141), a first worm (142), a first turbine (143) and a second worm (144); the motor (141) is mounted on the machine base (110); the first worm (142) is arranged on the output shaft (1411) of the motor (141); the first worm (142) and the first turbine (143) are in transmission cooperation; the first turbine (143) is mounted on the second worm (144) to drive the second worm (144) to rotate; the second worm (144) is rotatably mounted on the machine base (110); the transmission shaft (130) is mounted with a transmission member (146); the transmission member (146) and the second worm (144) are in meshing transmission.

9. A folding screen, characterized in that: include: The active mechanism according to any one of claims 1 to 8; The screen (200) is connected to the swing arm (120).

10. A vehicle, characterized in that: Including the folding screen as described in claim 9.

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