Vehicle-mounted curtain device and vehicle

Abstract

The utility model provides a vehicle-mounted curtain device and a vehicle. The vehicle-mounted curtain device comprises a shell; the curtain assembly comprises a winding drum and a curtain; the first arm rod comprises a first side rod and a second side rod which are hinged, one end of the first side rod is hinged to the shell, and one end of the second side rod is hinged to the movable end of the curtain; the second arm rod comprises a third side rod and a fourth side rod which are hinged, one end of the third side rod is hinged to the shell, and one end of the fourth side rod is hinged to the movable end of the curtain; the first motor is used for driving the first side rod; the second motor is used for driving the third side rod; the elastic energy storage mechanism is connected with the winding drum, and the elastic energy storage mechanism is used for storing energy in the process of unfolding the curtain and releasing the energy in the process of winding the curtain; and the braking module is in an open state in the process of unfolding or winding the curtain and is in a braking state when the movable end of the curtain is located at the target position so as to brake the winding drum.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle-mounted curtain device and a vehicle. BACKGROUND

[0002] Vehicles have become an essential means of transportation in people's daily life, and the entertainment method in the vehicle plays an important role in the riding experience of passengers. The curtain projection technology combining a curtain and a projector is widely used for image / video playing in the vehicle. With the development of intelligence, the endless hovering function of the curtain has become a key indicator of customer experience. In the related technology, the lifting function of the curtain is realized by using left and right arm rod motors and a pipe winding motor. There are three motors, and it is difficult to synchronize the control of the three motors, which can easily cause the curtain to be misaligned during lifting, and the curtain can be wrinkled, uneven and noisy. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a vehicle-mounted curtain device and a vehicle, which can help to solve the problems of large synchronization control difficulty and poor stability of the existing vehicle-mounted curtain. The various aspects of the present application are introduced below.

[0004] In a first aspect, the present application provides a vehicle-mounted curtain device, comprising: a shell; a curtain assembly fixedly arranged in the shell, the curtain assembly comprising a winding drum and a curtain, one end of the curtain being fixed to the winding drum, the other end of the curtain being a movable end, and the movable end being connected with a cover plate; a first arm rod comprising a first side rod and a second side rod hingedly connected, one end of the first side rod being hingedly arranged in the shell, and one end of the second side rod being hingedly connected with the movable end of the curtain; a second arm rod comprising a third side rod and a fourth side rod hingedly connected, one end of the third side rod being hingedly arranged in the shell, and one end of the fourth side rod being hingedly connected with the movable end of the curtain; a first motor for driving the first side rod; a second motor for driving the third side rod; an elastic energy storage mechanism connected with the winding drum, the elastic energy storage mechanism being used for accumulating energy during unfolding of the curtain and releasing energy during winding of the curtain; a brake module fixedly arranged in the shell, the brake module being used for being in an open state during unfolding or winding of the curtain, and being in a brake state when the movable end of the curtain is located at a target position to brake the winding drum; and wherein the length of the first side rod is the same as the length of the third side rod, and the length of the second side rod is the same as the length of the fourth side rod.

[0005] In a second aspect, the present application provides a vehicle comprising a vehicle body and the vehicle-mounted curtain device as described in the first aspect.

[0006] In the process of driving the curtain to expand by the first motor, the second motor, the first arm lever and the second arm lever, the elastic energy storage mechanism accumulates energy and provides a rear tension to stably expand the curtain; in the process of retracting the curtain, the elastic energy storage mechanism releases energy and provides a winding power to cooperate with the first motor, the second motor and the first arm lever and the second arm lever to complete the stable retraction of the curtain. After the curtain is expanded, the brake module is in a braking state, the first motor and the second motor drive the curtain to be taut, and the winding drum and the curtain are fixed. The embodiment of the application can realize the flattening and straightening of the curtain, and is helpful to simplify the difficulty of synchronous control of the curtain lifting, and the curtain lifting control runs stably and has small noise. BRIEF DESCRIPTION OF DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the description of the embodiments of the application will be briefly introduced.

[0008] Figure 1 is a structural schematic diagram of a vehicle-mounted curtain device provided by the embodiment of the application.

[0009] Figure 2 is Figure 1 is a back view schematic diagram of the vehicle-mounted curtain device after removing the shell.

[0010] Figure 3 is Figure 2 is a front view schematic diagram of the vehicle-mounted curtain device.

[0011] Figure 4 is Figure 2 is a schematic diagram of a winding drum of the vehicle-mounted curtain device.

[0012] Figure 5 is Figure 4 is an enlarged schematic diagram of a brake module.

[0013] Figure 6 is Figure 1 is a working state switching schematic diagram of the vehicle-mounted curtain device.

[0014] Figure 7 is Figure 4 is an enlarged schematic diagram of an elastic energy storage mechanism.

[0015] Figure 8 is Figure 7 is a side view schematic diagram of a winding spring.

[0016] Figure 9 is another possible structural schematic diagram of the elastic energy storage mechanism provided by the embodiment of the application.

[0017] Figure 10is a schematic diagram of a component part of a vehicle provided by an embodiment of the present application. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The same or similar reference signs are used to represent the same or similar modules in the drawings. It should be understood that the drawings are only schematic, and the protection scope of the present application is not limited thereto.

[0019] In recent years, the automobile industry has developed rapidly, and various types of entertainment products have great potential on the vehicle platform. The automobile has gradually become a mobile terminal product integrating multiple life functions. The functions of the vehicle-mounted system begin to gradually enrich, and the vehicle-mounted audio and video system is also the same. The vehicle-mounted curtain system and the laser projection equipment are suitable for the vehicle platform, which can greatly enrich the experience of passengers in the vehicle. For example, the curtain projection technology combining the curtain and the projector is used for image / video playing in the vehicle.

[0020] With the development of intelligence, the electric control lifting screen, as an indispensable part of the laser projection equipment, needs to match various types of entertainment type display suitable size projection curtain, so as to provide different projection effects, such as providing the maximum size projection curtain when full screen viewing, or providing the matching size projection curtain when displaying entertainment lyrics. The function of the curtain hovering has become a key indicator of customer experience. While realizing the hovering, it is also necessary to ensure the stability of the system.

[0021] In the related art, left and right arm rod motors and pipe winding motors are used to realize the lifting function of the curtain, but it is difficult to synchronously control the three motors, and the pipe winding motor and the arm rod motor are easy to be out of synchronization, which leads to the misalignment of the curtain lifting, the unevenness of the curtain folding, and the problems of high cost and high noise.

[0022] It can be seen that the current projection curtain lifting scheme has the problems of difficult synchronous control, easy unevenness of the curtain folding, and high noise.

[0023] It should be noted that the above-mentioned problems of difficult synchronous control and unevenness of the curtain folding in the lifting scheme of the curtain realized by the left and right arm rod motors and the pipe winding motor are only an example, and the embodiments of the present application can be applied to any type of scene with poor stability of the vehicle-mounted curtain.

[0024] Therefore, it is necessary to design a technical scheme of a vehicle-mounted curtain with high stability.

[0025] Based on this, an embodiment of the present application provides a vehicle-mounted curtain device. The technical scheme of the vehicle-mounted curtain device will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Figure 1 , Figure 2The vehicle-mounted curtain device according to the embodiments of the present application is described in detail. As shown in Figure 1 、 Figure 2 The vehicle-mounted curtain device 100 according to the embodiments of the present application can include a housing 110, a curtain assembly 120, a first arm rod 140, a second arm rod 150, a first motor 161, a second motor 162, an elastic energy storage mechanism 130, and a brake module 170.

[0026] The housing 110 is a mounting base of the vehicle-mounted curtain device 100, and can be mounted on a vehicle body of a vehicle. In some embodiments, the housing 110 can be hidden and fixedly arranged in the vehicle body.

[0027] The curtain assembly 120 is fixedly arranged on the housing 110. Generally, the curtain assembly 120 includes a winding drum 122 and a curtain 124, the winding drum 122 is also called a reel, and the curtain 124 has a fixed end and a movable end, and the fixed end of the curtain 124 is fixedly connected with the winding drum 122. That is, one end of the curtain 124 is fixed to the winding drum 122, and the other end of the curtain 124 is the movable end, and the movable end is connected with a rigid movable cover plate 126. In the process of winding the curtain 124 on the winding drum 122, the fixed end is at the innermost circle, and the movable end of the curtain 124 is away from the housing 110 when the curtain 124 is unfolded.

[0028] The first arm rod 140 has a first side rod 141 and a second side rod 142 which are hingedly connected, one end of the first side rod 141 is hingedly arranged on the housing 110, and one end of the second side rod 142 is hingedly connected with the movable end of the curtain 124. That is, one end of the second side rod 142 is hingedly connected with the movable cover plate 126. The first side rod 141 and the second side rod 142 can be hingedly connected through a first hinge 144.

[0029] The second arm rod 150 has a third side rod 151 and a fourth side rod 152 which are hingedly connected, one end of the third side rod 151 is hingedly arranged on the housing 110, and one end of the fourth side rod 152 is hingedly connected with the movable end of the curtain 124. That is, one end of the fourth side rod 152 is hingedly connected with the movable cover plate 126. The third side rod 151 and the fourth side rod 152 can be hingedly connected through the first hinge 144.

[0030] The length of the first side rod 141 and the length of the third side rod 151 are the same, and the length of the second side rod 142 and the length of the fourth side rod 152 are the same. It can be seen that the length of the first arm rod 140 and the length of the second arm rod 150 are the same.

[0031] The movable cover plate 126 is connected with the movable end of the curtain 124, and two ends of the movable cover plate 126 are connected with the first arm rod 140 and the second arm rod 150 respectively, that is, the installation direction of the movable cover plate 126 is perpendicular to the unfolding direction of the curtain 124. Alternatively, one end of the second side rod 142 is hingedly connected with the movable end of the curtain 124 (or one end of the movable cover plate 126), and one end of the fourth side rod 152 is hingedly connected with the movable end of the curtain 124 (or the other end of the movable cover plate 126). The movable cover plate 126 is usually a rigid member, and together with the first arm rod 140, the second arm rod 150 and the winding drum 122 forms a linkage mechanism. As shown in FIG. 8, the movable cover plate 126 helps to make the force on the movable end of the curtain 124 uniform and keep the curtain 124 in an unfolded state. Figure 1

[0032] The first motor 161 is arranged on the housing 110 and is used to drive the first side rod 141 to drive the first arm rod 140. The first motor 161 can drive the first side rod 141 to rotate clockwise or counterclockwise, or brake the first side rod 141.

[0033] The second motor 162 is arranged on the housing 110 and is used to drive the third side rod 151 to drive the second arm rod 150. The second motor 162 can drive the third side rod 151 to rotate clockwise or counterclockwise, or brake the third side rod 151.

[0034] Usually, two motors are arranged on two sides of the curtain 124 respectively, and the two side arm rods are driven by the two motors respectively, which occupies small space and is suitable for vehicle-mounted design.

[0035] The type of the first motor 161 and the second motor 162 is not limited in the embodiments of the present application. The first motor 161 and the second motor 162 can be worm motors, bevel gear motors or the like. In some embodiments, the first motor 161 and the second motor 162 can both be worm motors, which helps to reduce the occupied space and adapt to the vehicle-mounted design environment.

[0036] The first motor 161 and the second motor 162 can be synchronously controlled. The specifications of the first motor 161 and the second motor 162 can be the same or different. In some embodiments, the specifications of the first motor 161 and the second motor 162 are the same, which helps to simplify the design and reduce the difficulty of synchronous control.

[0037] For the convenience of description, in the embodiments of the present application, when the curtain 124 is unfolded, the rotation direction of the winding drum 122 is a positive rotation direction. The direction in which the curtain 124 is unfolded and extended is downward, and the direction in which the curtain 124 is retracted is upward. In the embodiments of the present application, as viewed in the direction perpendicular to the back surface of the curtain assembly 120, the first arm rod 140 is called a left side arm rod, and the second arm rod 150 is called a right side arm rod. The first motor 161 is called a left motor, and the second motor 162 is called a right motor. ​

[0038] As shown in Figure 3 , Figure 4 , the shell 110 is provided with a left support seat 112 and a right support seat 114. The left and right support seats are respectively connected with the elastic energy storage mechanism 130 and the brake module 170.

[0039] The elastic energy storage mechanism 130 is connected with the winding drum 122. The elastic energy storage mechanism 130 is used to accumulate energy in the process of unfolding the curtain 124, and release energy in the process of winding the curtain 124.

[0040] In some implementations, the elastic energy storage mechanism 130 can include a coil spring, or a torsion spring. The coil spring is also called a scroll spring.

[0041] Taking the case that the elastic energy storage mechanism 130 includes a coil spring, when the curtain 124 is unfolded, the arm motor is driven to drive the connecting rod mechanism, which drives the cover plate 126 to move downward, and the cover plate 126 drives the curtain 124 to descend. The curtain 124 drives the winding drum 122 to rotate, and the winding drum 122 drives the moving end of the coil spring to compress and tighten the coil spring. The coil spring is in a state of contraction and compression under the rotation of the winding drum 122, which is equivalent to storing torque potential energy. The driving force of the arm motor and the damping force provided by the coil spring help to make the force on the curtain 124 uniform and stable, and reduce noise. When the curtain 124 is retracted, the driving force mainly relies on the release of the torque potential energy of the coil spring to drive the winding drum 122 to rotate, and the curtain 124 to rise, while the arm motor is retracted to drive the movable cover plate 126 to rise together. The driving force provided by the release of the potential energy of the coil spring and the damping force provided by the arm motor help to make the force on the curtain 124 uniform and stable, and reduce noise.

[0042] The brake module 170 is fixedly arranged on the shell 110. The brake module 170 is in an open state in the process of unfolding or winding the curtain 124, and does not interfere with the rotation of the winding drum 122; and is in a braking state when the movable end of the curtain 124 is located at a target position, to brake the winding drum 122 and prevent the winding drum 122 from rotating. The target position can be any hovering position expected to reach, or the position in the closed state.

[0043] The brake module 170 has an open state and a brake (lock) state, and is usually in a normally closed brake state. During the lowering and raising of the curtain 124, the brake module 170 is in the open state so that the winding drum 122 rotates. For example, when the curtain 124 is unfolded (lowered), the first arm lever 140 and the second arm lever 150 are driven to rotate by the arm lever motor (i.e., the first motor 161 and the second motor 162), the movable cover plate 126 is lowered, and the movable cover plate 126 drives the curtain 124 to lower. The curtain 124 drives the winding drum 122 to rotate, and after the curtain 124 is lowered to a target position (e.g., the lowest position), the brake module 170 is in the brake state to lock the winding drum 122, so that hovering at any position can be achieved. When the curtain 124 is retracted (raised), the brake module 170 is in the open state, and the winding drum 122 rotates under the action of the elastic energy storage mechanism 130.

[0044] In some implementations, the brake module 170 can include an electromagnetic brake or a pneumatic brake. The electromagnetic brake has a compact structure, simple operation, sensitive response, and high reliability.

[0045] In some implementations, the electromagnetic brake can be directly connected to the winding drum 122 for braking of the winding drum 122, so that the structure arrangement is simple.

[0046] In some implementations, the electromagnetic brake can be directly connected to the winding drum 122 for braking of the winding drum 122, so that the structure arrangement is simple. Figure 5 As shown in FIG. 6, the brake module 170 can include a brake 171, a speed reducer 172, and a first connecting shaft 173. The speed reducer 172 is fixedly arranged on the housing 110, and an input shaft of the speed reducer 172 is connected to the brake 171. Specifically, the speed reducer 172 is fixed on the housing 110 through the right support seat 114, the rotating end of the brake 171 is connected to the input shaft of the speed reducer 172, and the brake torque can be amplified through the speed reducer 172. One end of the first connecting shaft 173 is connected to the output shaft of the speed reducer 172, and the other end of the first connecting shaft 173 is fixedly connected to the winding drum 122. The speed ratio of the speed reducer 172 can be, for example, 1:3 or 1:5, and the shaft diameter of the input shaft of the speed reducer 172 is usually smaller than that of the output shaft. The brake 171 is not directly connected to the winding drum 122, but the brake torque of the brake 171 is amplified through the speed reducer 172, which helps to improve the reliability and stability of the winding drum braking. A smaller electromagnetic brake can be selected, which helps to reduce the overall occupied space.

[0047] In some embodiments, the brake 171 can be a normally open type with power off. In other embodiments, the brake 171 can be a normally closed type with power off, which can prevent accidents in the case of sudden power failure without holding. For example, when the brake 171 is powered off, the electromagnet is attracted and holds the input shaft of the speed reducer, acting as a brake. When the brake 171 is powered on, the electromagnet is released, the input shaft of the speed reducer 172 is released, and the first connecting shaft 173 is driven to rotate by the drum 122, and the first connecting shaft 173 is driven to rotate by the speed reducer 172. Since the projection screen is mostly closed for a long time, the brake 171 is a normally closed type with power off, which also helps to reduce the heat generated by the electrical control elements.

[0048] In some implementations, during the process of the movable end of the curtain 124 from the first preset distance to the target position, the brake module 170 is in the braking state. The first preset distance can be, for example, 15 mm, 20 mm, or 25 mm. This helps to prevent the curtain surface from shaking during the vehicle movement, and the edges of the curtain surface are straight without obvious curling, ensuring smooth deployment.

[0049] The curtain assembly 120 generally has a plurality of working states, which can include a closed state, a hovering state, a deployed state, and a retracted state. When the curtain assembly 120 is in the closed state or the hovering state, the first motor 161 and the second motor 162 are both in the braking state. The working principle of the vehicle-mounted curtain device according to the embodiments of the present application will be described below. Figure 6

[0050] 1) Curtain closed state: the brake module 170 is braked to ensure the stability of the curtain 124 in the closed state. For example, the self-locking force generated by the brake ensures that the vehicle-mounted curtain is resistant to shocks, and the curtain 124 will not fall off due to vehicle bumps, etc.

[0051] 2) Curtain deployed state: the brake module 170 is in the open state, driven by the arm motor, and the linkage mechanism (i.e., the first arm 140 and the second arm 150) opens the curtain 124. The elastic energy storage mechanism 130 (such as a coil spring / torsion spring) provides a relatively stable upward tension to the curtain, ensuring the flatness of the curtain surface during deployment.

[0052] 3) Curtain hovering state: it can hover at any preset position. Before the curtain 124 reaches the predetermined position, for example, when the movable end of the curtain 124 is at a first preset distance from the target position, the brake module 170 is braked, and the linkage mechanism is driven by the arm motor to move downward, tightening the curtain 124. During vehicle movement, it helps to prevent the curtain surface from shaking, and the edges of the curtain surface are straight without obvious curling, thereby ensuring good curtain projection effect.

[0053] ​In some embodiments, when the curtain needs to be flattened and straightened after being unfolded, the arm rod motor movement can be paused first, and the brake module 170 is braked, the winding drum 122 is locked and cannot rotate, and then the arm rod motor is started to drive the connecting rod mechanism and the curtain 124 to descend by a distance, the winding drum 122 and the curtain 124 are fixed and cannot move, the curtain can be flattened, straightened and tightened, the noise is small, and the synchronization control of the curtain lifting can be simplified.

[0054] 4) Curtain retraction state: the brake module 170 is in the open state, the arm rod motor drives the connecting rod mechanism to ascend and retract, and the curtain 124 is driven by the winding power (elastic energy storage mechanism 130) to drive the connecting rod mechanism to wind the curtain 124. During the vehicle movement, the curtain surface cannot be shaken, the edges of the curtain surface are straight, and there is no obvious curling phenomenon, which helps to ensure the curtain surface effect during the closing process and reduce noise.

[0055] In the embodiment of the application, the first motor 161 and the second motor 162, and the first arm rod 140 and the second arm rod 150 drive the curtain to unfold, and the elastic energy storage mechanism 130 accumulates energy to provide a rear tension to stably unfold the curtain; during the retraction of the curtain, the elastic energy storage mechanism 130 releases energy to provide winding power, and the connecting rod mechanism composed of the first motor 161, the second motor 162, the first arm rod 140 and the second arm rod 150 completes the stable retraction of the curtain. After the curtain is unfolded, the brake module is in the braking state, the first motor 161 and the second motor 162 drive the curtain 124 to be tightened, and the winding drum 122 and the curtain 124 are fixed and cannot move. The embodiment of the application can realize the flattening, straightening and tightening of the curtain 124, which helps to simplify the synchronization control difficulty of the curtain lifting, the curtain lifting control runs stably, and the noise is small.

[0056] In some implementations, the lengths of the first side rod 141 and the second side rod 142, the third side rod 151 and the fourth side rod 152 are the same. The four side rods are symmetrically and uniformly arranged, the left and right sides of the curtain 124 are uniformly stressed, which helps to stabilize the curtain and reduce the control difficulty.

[0057] As Figure 2As shown, the first arm rod 140 has three rotary joints, respectively, a first joint of the first motor 161 driving the first side rod 141, a second joint 145 of the first side rod 141 connecting with the second side rod 142, and a third joint 146 of the second side rod 142 connecting with the movable cover plate 126. Since the first joint is driven by the first motor 161, the first joint can also be called a driven joint, and the third joint 146 is a passive joint. Similarly, the second arm rod 150 on the opposite side also has three rotary joints, respectively, a first joint of the second motor 162 driving the third side rod 151, a second joint 145 of the third side rod 151 connecting with the fourth side rod 152, and a third joint 146 of the fourth side rod 152 connecting with the movable cover plate 126.

[0058] In some implementations, the vehicle-mounted curtain device 100 can further include a controller. The controller is configured to control the operating parameters of the first motor 161 and the operating parameters of the second motor 162, so that the rotation speed of the first side rod 141 matches the rotation speed of the third side rod 151, and the rotation direction of the first side rod 141 is opposite to the rotation direction of the third side rod 151. That is, the controller controls the rotation speed of the first side rod 141 to be consistent with the rotation speed of the third side rod 151, and controls the synchronous motion of the left and right arm rods, which helps to improve the synchronization of the motion of the left and right arm rods and improve the stability of the curtain in the infinite suspension state. For example, the controller can control the rotation speed of the first side rod 141 to be consistent with the rotation speed of the third side rod 151, and control the synchronous motion of the left and right arm rods.

[0059] In some implementations, when the curtain assembly 120 is in the unfolded state and / or the retracted state, that is, during the lifting of the curtain 124, the controller is configured to control the operating parameters of the first motor 161 and the operating parameters of the second motor 162, so that the sum of the torques of the first motor 161 and the second motor 162 matches the torque provided by the elastic energy storage mechanism 130.

[0060] For example, the elastic energy storage mechanism 130 includes a coil spring. The torque of the coil spring is different under different compression states. The controller can obtain the deformation amount of the coil spring according to the position of the curtain, and obtain the torque of the coil spring corresponding to any position of the curtain according to the deformation amount of the coil spring and the pre-stored performance curve of the coil spring. Thus, during the lifting of the curtain, the controller controls the sum of the torques of the first motor 161 and the second motor 162 to match the torque of the coil spring, so that the forces on both sides of the movable end and the fixed end of the curtain are uniform (such as equal in size and opposite in direction), which can ensure the curtain to lift smoothly.

[0061] The projection screen of the vehicle of the embodiments of the present application is further described below in combination with some possible implementations of the embodiments of the present application.

[0062] In some implementations, the elastic energy storage mechanism 130 can be located at one end of the winding drum 122, and the brake module 170 can be located at the other end of the winding drum 122, which is simple in arrangement. In other implementations, the elastic energy storage mechanism 130 and the brake module 170 can be located at the same end of the winding drum 122, which is compact in arrangement.

[0063] In some implementations, the elastic energy storage mechanism 130 can include a coil spring, and the elastic energy storage mechanism 130 is fixedly arranged on the left support seat 112 of the shell 110. As shown in Figure 7 、 Figure 8 The elastic energy storage mechanism 130 can include a spring box 131, a coil spring 132, a gasket 133, and a second connecting shaft 134.

[0064] The coil spring 132 is installed in the spring box 131, the rotating end (inner end) of the coil spring 132 is connected to one end of the second connecting shaft 134, and the fixed end (outer end) of the coil spring 132 is fixedly connected to the spring box 131. The other end of the second connecting shaft 134 is fixedly connected to the winding drum 122. The spring box 131 is fixedly arranged on one side of the left support seat 112, the second connecting shaft 134 is connected to the bearing 135 in the left support seat 112, and can rotate relatively. The gasket 133 is connected to the coil spring 132.

[0065] The working process of the elastic energy storage mechanism 130 is as follows: during the process of unfolding the curtain, the second connecting shaft 134 (i.e., the intermediate rotating shaft) connected to the winding drum 122 continuously rotates, and the coil spring 132 is tightened, and the coil spring 132 generates elastic torque potential energy. The intermediate second connecting shaft 134 reversely rotates under the driving of the spring torque potential energy, and drives the winding drum 122 to rotate, which can play a role of winding the curtain 124.

[0066] In some implementations, if the elastic energy storage mechanism 130 includes a torsion spring, the torsion spring can be arranged in the cavity of the winding drum 122, which helps to reduce the occupied space. In a smaller occupied space, it is helpful to increase the working stroke of the torsion spring and the lifting stroke of the curtain.

[0067] In other specific implementations, the elastic energy storage mechanism 130 is fixedly arranged on the left support seat 112 of the shell 110, and the elastic energy storage mechanism 130 includes a torsion spring. As shown in Figure 9 The elastic energy storage mechanism 130 can include a bearing 135, a mandrel 136, a torsion spring 137, and an end stop wheel 138. The end stop wheel 138 is also called a support wheel.

[0068] The first end of the mandrel 136 is connected to the drum 122 via a bearing 135, and the axis of the mandrel 136 coincides with the axis of the drum 122. An end stop wheel 138 is fixedly mounted on the second end of the mandrel 136. The end stop wheel 138 is located within the cavity of the drum 122, and there is a gap between the outer circumference of the end stop wheel 138 and the inner wall of the drum 122. The second end is opposite to the first end. A torsion spring 137 passes through the outer circumference of the mandrel 136. One end of the torsion spring 137 is connected to the second end of the mandrel 136 or the end stop wheel 138, and the other end of the torsion spring 137 is connected to the drum 122.

[0069] Specifically, the left support 112 is fixed to the housing 110, and the spindle 136 is rigidly connected to the left support 112, but the spindle 136 does not rotate. The spindle 136 and the drum 122 are connected by a bearing 135 and can rotate relative to each other. In some embodiments, such as Figure 9 As shown, a connector 125 can be fixedly installed at the end of the drum 122. The spindle 136 and the connector 125 are connected by a bearing 135 and can move relative to each other. That is, the inner circumference of the connector 125 has the installation space of the bearing 135. The connector 125 fixedly installed at the end of the drum 122 helps to reduce the amount of processing and maintain a large space in the inner cavity of the drum 122. One end of the torsion spring 137 is fixedly connected to the connector 125 (i.e., connected to the drum 122), and the other end of the torsion spring 137 is fixedly connected to the spindle 136. Since the connector 125 is rigidly fixedly connected to the drum 122, and the end stop wheel 138 is fixedly connected to the spindle 136, the end stop wheel 138 has a certain gap with the inner wall of the drum 122, and the end stop wheel 138 can rotate relative to the drum 122.

[0070] Figure 9 The working process of the elastic energy storage mechanism 130 shown is as follows: During the unfolding of the curtain, the roller 122 rotates, driving the connector 125 to rotate. The connector 125 drives one end of the torsion spring 137 to rotate, continuously torturing the torsion spring 137, which is in a state of storing torque potential energy. When the torsion spring 137 releases torque potential energy in the opposite direction, under the action of the torque potential energy of the torsion spring 137, it drives the connector 125 and the roller 122 to rotate in opposite directions, thus achieving the function of rewinding the curtain.

[0071] If the elastic potential energy provided by a single spring is limited, it cannot meet the tension requirements during the curtain raising and lowering process. In some implementations, the elastic energy storage mechanism 130 may include a coil spring and a torsion spring. The coil spring may be located on the end side of the drum 122, and the torsion spring may be located inside the cavity of the drum 122. By using multiple springs in this way, a larger elastic potential energy can be provided to meet the tension and travel requirements during the curtain raising and lowering process.

[0072] In this embodiment, during the unfolding of the curtain driven by the first motor 161, the second motor 162, the first arm 140, and the second arm 150, the elastic energy storage mechanism 130 stores energy to provide back tension, smoothly unfolding the curtain. During the retraction of the curtain, the elastic energy storage mechanism 130 releases energy to provide winding power, working in conjunction with the linkage mechanism formed by the first motor 161, the second motor 162, the first arm 140, and the second arm 150 to complete the smooth retraction of the curtain. After the curtain is unfolded, the braking module is in a braking state, and the first motor 161 and the second motor 162 drive the curtain 124 to tighten, while the roller 122 and the curtain 124 remain stationary. This embodiment can achieve the flattening, straightening, and tightening of the curtain 124, which helps to simplify the synchronous control of curtain lifting and lowering, resulting in smooth curtain lifting and lowering operation with low noise.

[0073] This application also provides a vehicle. Figure 10 This is a schematic diagram of the constituent units / partial constituent units of the vehicle provided in the embodiments of this application. For example... Figure 10 As shown, the vehicle 1000 may include: a vehicle body 1010, and a vehicle-mounted screen device 100 as described above.

[0074] Those skilled in the art will understand that Figure 10 This is merely an example of vehicle 1000 and does not constitute a limitation on the vehicle. It may include more or fewer parts than shown, or combine certain parts, or use different parts.

[0075] It should be understood that the vehicles in the embodiments of this application can be wheeled vehicles or work equipment on land. Vehicles can be motor vehicles, including those used for passenger transport, goods transport, and specialized engineering operations. Vehicles can be passenger cars and freight cars. Passenger cars can be private cars, buses, commercial vehicles, or even soft-seat cars, hard-sleeper cars, dining cars, baggage cars, postal cars, etc. Freight cars can be flatcars, open wagons, covered wagons, tank cars, refrigerated cars, etc. Vehicles can also be special vehicles, such as armored cash transport vehicles, vans, or vehicle-mounted modular units. Vans or vehicle-mounted modular units are special-purpose equipment used in geological exploration, water conservancy projects, construction projects, military field operations, communications, and other operations requiring fieldwork or combat. Vehicles in the embodiments of this application can be vehicles powered by traditional energy sources, such as gasoline, diesel, or natural gas, or vehicles powered by new energy sources, such as electric vehicles or hydrogen fuel cell vehicles. The embodiments of this application do not specifically limit the type of vehicle.

[0076] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0077] Those skilled in the art can appreciate that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0078] In the embodiments provided in the present application, it should be understood that the disclosed apparatuses / devices and methods can be implemented in other ways. For example, the above-described apparatus / device embodiments are merely illustrative, for example, the division of modules or units is merely a logical function division, and there can be another division manner in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed interconnections can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0079] It should be understood that when used in the specification and the appended claims of the present application, the term "comprising" indicates the presence of described features, integers, steps, operations, elements, and / or components, but does not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0080] It should also be understood that the term "and / or" used in the specification and the appended claims of the present application means any combination of one or more of the associated listed items and all possible combinations thereof, and includes these combinations.

[0081] As used in the specification and the appended claims of the present application, the term "if" can be interpreted as "when" or "upon" or "in response to a determination" or "in response to detecting" depending on the context. Similarly, the phrase "if determined" or "if detected [the described condition or event]" can be interpreted as meaning "upon determining" or "in response to determining" or "upon detecting [the described condition or event]" or "in response to detecting [the described condition or event]" depending on the context.

[0082] In addition, in the description of the specification and the appended claims of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0083] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A vehicle-mounted curtain device, characterized by comprising: The vehicle-mounted curtain device comprises a housing, a curtain assembly fixedly arranged in the housing, the curtain assembly comprising a winding drum and a curtain, one end of the curtain being fixedly arranged on the winding drum, the other end of the curtain being a movable end, and a cover plate being connected to the movable end of the curtain, a first arm rod comprising a first side rod and a second side rod which are hingedly connected, one end of the first side rod being hingedly arranged on the housing, and one end of the second side rod being hingedly connected to the movable end of the curtain, a second arm rod comprising a third side rod and a fourth side rod which are hingedly connected, one end of the third side rod being hingedly arranged on the housing, and one end of the fourth side rod being hingedly connected to the movable end of the curtain, a first motor for driving the first side rod, a second motor for driving the third side rod, an elastic energy storage mechanism connected to the winding drum, the elastic energy storage mechanism being used for accumulating energy during unwinding of the curtain and releasing energy during winding of the curtain, and a brake module fixedly arranged in the housing, the brake module being in an open state during unwinding or winding of the curtain, and being in a braking state when the movable end of the curtain is located at a target position to brake the winding drum. The length of the first side rod is the same as the length of the third side rod, and the length of the second side rod is the same as the length of the fourth side rod. The brake module is in the braking state from when the movable end of the curtain is at a first preset distance from the target position to when the movable end reaches the target position. The brake module comprises an electromagnetic brake. The brake module further comprises a reducer fixedly arranged in the housing, an input shaft of the reducer being connected to the electromagnetic brake, a connecting shaft, one end of the connecting shaft being connected to an output shaft of the reducer, and the other end of the connecting shaft being connected to the winding drum. The elastic energy storage mechanism comprises a coil spring and / or a torsion spring. If the elastic energy storage mechanism comprises a torsion spring, the torsion spring is arranged in a cavity of the winding drum. The elastic energy storage mechanism further comprises a mandrel, a first end of the mandrel and the winding drum being connected through a bearing, an axis of the mandrel being coincident with an axis of the winding drum, a second end of the mandrel being fixedly arranged with an end stop wheel, the end stop wheel being located in the cavity of the winding drum, and an outer periphery of the end stop wheel having a gap with an inner wall of the winding drum, the second end being opposite to the first end. The torsion spring is arranged on the outer periphery of the mandrel, one end of the torsion spring being connected to the second end of the mandrel or the end stop wheel, and the other end of the torsion spring being connected to the winding drum. The curtain assembly has a plurality of working states, the plurality of working states comprising a closed state, a hovering state, an unwinding state, and a retracting state, the first motor and the second motor being in a braking state when the curtain assembly is in the closed state or the hovering state.

2. The vehicle-mounted curtain device according to claim 1, characterized by The vehicle-mounted curtain device further comprises a controller, the controller being used for controlling an operating parameter of the first motor and an operating parameter of the second motor when the curtain assembly is in the unwinding state or the retracting state, so that a sum of torques of the first motor and the second motor matches a torque provided by the elastic energy storage mechanism.

3. A vehicle-mounted screen device according to claim 2, characterised in that, ​ 4. A vehicle-mounted screen device according to claim 3, characterised in that, ​ ​ ​ 5. The vehicle-mounted screen device according to claim 1, characterized by ​ 6. A vehicle-mounted screen device according to claim 5, characterised in that, ​ 7. A vehicle-mounted screen device according to claim 6, characterised in that, ​ ​ ​ 8. The vehicle-mounted screen device according to any one of claims 1 to 7, characterized by, ​ 9. A vehicle-mounted screen device according to claim 8, characterised in that, ​ ​ 10. A vehicle characterized by comprising: A vehicle comprising a vehicle body and a vehicle-mounted curtain device according to any one of claims 1 to 8. A vehicle comprising a vehicle body and a vehicle-mounted curtain device according to any one of claims 1 to 8.

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