A window shade mechanism

Abstract

The application discloses a kind of car window sunshade curtain mechanisms, belong to the field of automobile accessories.The device includes sunshade curtain body, traction rope and drive motor, sunshade curtain body adopts elastic shrinkage material, for shielding car window area;Traction rope is evenly distributed at the edge of sunshade curtain body, one end of each traction rope is connected to the edge of sunshade curtain body, and the other end is fixed with spline sleeve;Drive motor is evenly installed around the car window, and is located at the position corresponding to the direction of each traction rope, spline shaft is fixedly arranged on the output shaft of each drive motor;Spline shaft is spline connected with spline sleeve;Each drive motor is independently wound or released by spline shaft and spline sleeve to the traction rope.The present application controls the form adjustment of sunshade curtain body by using traction rope through multiple independent drive motors, realizes the function of free adjustment of overall shape of sunshade curtain, and has the advantages of convenient and quick adaptation to different profile car windows, especially special-shaped car windows.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a window sunshade mechanism. Background Technology

[0002] With the rapid development of the automotive industry and the increasing demands for passenger comfort, car window sunshades have become an important feature of automobiles. Sunshades are primarily used to block sunlight from entering the side and rear windows of a car, preventing direct sunlight from causing overheating, interior aging, and passenger discomfort. Currently, common car window sunshades on the market can be mainly divided into roller sunshades, folding sunshades, and fixed sunshades.

[0003] However, existing car window sunshades have a relatively fixed shape during use, making it difficult to adapt to car windows with different shapes, especially irregularly shaped windows.

[0004] Most existing sunshades are relatively simple in design, with the curtain body typically being a fixed rectangular or near-rectangular shape, requiring customization based on the specific area and shape of the car window. For example, common roller sunshades use a structure where one end of the curtain is rolled up onto a roller, and the shape of the curtain is fixed after unfolding, allowing only overall opening and closing without adapting to the specific contours of the car window. For irregularly shaped car windows such as side windows with triangular areas or rear windows with significant curvature changes, fixed-shape sunshades either cannot completely cover the window area, leaving blind spots.

[0005] In response to the aforementioned problem that sunshade curtains are relatively simple in form and cannot be adapted, this invention designs a car window sunshade curtain mechanism. Summary of the Invention

[0006] The purpose of this invention is to provide a vehicle window sunshade mechanism that can solve the problem that the existing sunshade forms are relatively simple and cannot be adapted.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a vehicle window sunshade mechanism, comprising a sunshade body, traction ropes, and a drive motor. The sunshade body is made of an elastic, contractible material and is used to cover at least a portion of the vehicle window area. The traction ropes are evenly distributed along the edges of the sunshade body, with one end of each traction rope connected to the edge of the sunshade body and the other end fixedly connected to a spline sleeve. The drive motors are evenly and fixedly installed around the vehicle window, at positions corresponding to the directions of each traction rope. A spline shaft is fixedly provided on the output shaft of each drive motor. The spline shaft is splinedly connected to the spline sleeve. Each drive motor independently winds or releases the traction rope through the spline shaft and spline sleeve.

[0008] Regarding the method of fixing the drive motor around the window, existing snap-on / slot-type installation can be used, where the bottom surface of the drive motor housing and the installation area around the window are respectively provided with mutually cooperating snap-on / slot components; alternatively, existing installation methods such as magnetic, 3M adhesive, or suction cup can be used. The sunshade body, as a functional component that directly blocks light, uses an elastic shrinkage material that deforms under external force and can at least partially recover its original shape when the force is removed or reduced, with an elastic recovery rate of not less than 50%. This allows it to automatically retract when the traction rope is released, eliminating the need for an additional reset mechanism and simplifying the overall structure. The traction rope, as an intermediate transmission element connecting the sunshade body and the drive motor, is used to... The driving force of the drive motor is transmitted to the edge of the sunshade body; multiple traction ropes are evenly distributed, ensuring that the stress points on the edge of the sunshade body are evenly arranged, providing a structural basis for multi-point independent adjustment of the curtain shape; the spline sleeve serves as the connection interface between the traction rope and the drive motor, enabling power transmission between the two; the drive motor, as a power source, provides driving force for the winding or releasing of the traction rope; multiple drive motors are evenly installed around the window and operate independently, allowing each traction rope to be independently controlled, thereby achieving independent traction at different positions on the edge of the sunshade body; the spline connection between the spline shaft and the spline sleeve can transmit a large torque and is reliable, ensuring that the rotational motion of the drive motor can be stably transmitted to the traction rope, realizing the winding, storage, release, or extension of the traction rope.

[0009] As a preferred embodiment of the present invention, it further includes a control module, each of which is electrically connected to one of the drive motors and is fixedly mounted on the housing of the corresponding drive motor; the control module is a switch button; the control module is used to control the operating state of the corresponding drive motor; each drive motor is equipped with an independent control module to realize independent control of each drive motor; the control module is in the form of a switch button, and the user can control the corresponding drive motor to start, stop or reverse by pressing the switch button, which is intuitive and convenient to operate.

[0010] As a preferred embodiment of the present invention, it further includes a controller, which is electrically connected to each of the drive motors and is used to independently control the operating state of each of the drive motors; the controller, as a centralized control unit, is electrically connected to all drive motors and can send control signals to each drive motor respectively, so as to realize independent and precise control of the rotation direction, rotation angle and rotation speed of each drive motor.

[0011] As a preferred embodiment of the present invention, the spline connection between the spline shaft and the spline sleeve is a static connection, and the spline sleeve is axially fixed. In the static connection mode, the axial position of the spline sleeve on the spline shaft is fixed, and there is no relative axial movement between the spline sleeve and the spline shaft. The connection has high rigidity and smooth transmission, which is suitable for application scenarios where the position of the traction point of the traction rope does not need to be adjusted along the axial direction.

[0012] As a preferred embodiment of the present invention, the spline connection between the spline shaft and the spline sleeve is a dynamic connection, allowing the spline sleeve to slide axially. In the dynamic connection mode, the spline sleeve can slide freely along the axial direction of the spline shaft, so that the end of the traction rope can automatically adjust its position axially according to the number of layers of the sunshade body during the winding process, avoiding the traction rope from overlapping or getting stuck during the winding process, and ensuring the uniformity and smoothness of the winding. At the same time, the dynamic connection mode also facilitates the quick assembly and disassembly of the spline sleeve and the spline shaft.

[0013] As a preferred embodiment of the present invention, the sunshade curtain body includes at least a first material layer and a second material layer stacked together, and the spline sleeve includes at least a first spline sleeve and a second spline sleeve; the first material layer and the second material layer stacked together form a multi-layer composite structure of the sunshade curtain body, and different material layers can have different light-blocking performance and physical properties, thereby enabling a single sunshade curtain to have multiple sun-blocking functions; the first spline sleeve and the second spline sleeve correspond to different material layers respectively, so that each material layer can be driven and controlled independently; The first material layer is a light-shielding layer. The edges of the first material layer are uniformly fixedly connected or sleeved to one end of each of the traction ropes. The other end of each of the traction ropes is splinedly connected to the spline shaft of the drive motor through the first spline sleeve. As a light-shielding layer, the main function of the first material layer is to block light from passing through and provide high light-shielding performance. The first material layer is connected to the drive motor through the traction rope and the first spline sleeve, so that the first material layer can be independently driven to unfold or retract. The second material layer is a light-transmitting layer. The edges of the second material layer are uniformly fixedly connected or sleeved to one end of each of the traction ropes. The other end of each traction rope is splinedly connected to the spline shaft of the drive motor through a second spline sleeve. As a light-transmitting layer, the main function of the second material layer is to retain a certain degree of light transmission while blocking some light, so as to meet the basic requirements for visibility during driving. The second material layer is connected to the drive motor through the traction rope and the second spline sleeve, so that the second material layer can be independently driven to unfold or retract. When used in conjunction with the first material layer, it can achieve different combinations and adjustments of light blocking degree. The second material layer is located between the first material layer and the window, and the second spline sleeve is located inside the first spline sleeve. The positional relationship between the second material layer and the window allows the second material layer to be deployed independently while keeping the first material layer closed when only partial shading is needed. The second material layer closer to the window provides moderate shading without completely obstructing the view. The axial positional relationship of the second spline sleeve inside the first spline sleeve allows the two spline sleeves to be arranged sequentially along the spline shaft without interfering with each other and to work independently.

[0014] As a preferred embodiment of the present invention, when the first spline sleeve slides out from the outer end of the spline shaft, the first spline sleeve is in a disengaged state from the spline shaft; when the second spline sleeve slides out from the outer end of the spline shaft, the second spline sleeve is in a disengaged state from the spline shaft; when a certain material layer is not required to participate in sun shading, the corresponding spline sleeve can be slid out from the outer end of the spline shaft to disengage it, and the material layer will automatically retract to a closed state under its own elastic contraction force without interfering with other material layers that are still in the working state; the disengagement function of the spline sleeve allows each material layer to be selectively used or deactivated as needed, improving the flexibility and selectivity of the system.

[0015] As a preferred embodiment of the present invention, the second material layer is an elastic mesh fabric; the elastic mesh fabric is made of polyester or nylon multifilament interwoven with spandex covered yarn, and the mesh size is 0.5mm-10mm; the polyester or nylon multifilament provides good abrasion resistance and tensile strength, while the spandex covered yarn gives the mesh fabric excellent elastic shrinkage performance, so that the second material layer can quickly and automatically shrink back when the traction rope is released; the mesh structure with a mesh size of 0.5mm-10mm retains a certain degree of transparency while ensuring the sunshade effect.

[0016] As a preferred embodiment of the present invention, the spline sleeve is provided with a winding wheel for winding and storing the traction rope on its peripheral side. The winding wheel is provided on the peripheral side of the spline sleeve, providing a dedicated winding and storage structure for the traction rope. When the drive motor drives the spline shaft to rotate, the spline sleeve drives the winding wheel to rotate synchronously, and the traction rope is neatly wound on the outer peripheral surface of the winding wheel, avoiding slippage or messy accumulation that may occur if the traction rope is directly wrapped around the surface of the spline sleeve, thus ensuring the reliability and neatness of the winding.

[0017] As a preferred embodiment of the present invention, it further includes a power module; the power module is an on-board power supply used to power the drive motor and various modules; the power module provides electrical energy to the entire window sunshade mechanism; by using an on-board power supply as the power module, there is no need to set up an additional independent power supply device.

[0018] The present invention has the following beneficial effects: 1. This invention uses multiple independently operating drive motors to control the shape adjustment of the sunshade body via traction ropes. Specifically, each drive motor independently winds or releases the traction rope through the cooperation of a spline shaft and a spline sleeve, thereby achieving independent traction at multiple points on the edge of the sunshade body. This allows the sunshade body to freely adjust its overall shape according to the window profile or user needs, providing the advantage of convenient and quick adaptation to different window profiles, especially irregularly shaped windows. This solves the problem of existing sunshades having a single, fixed shape and being unable to be finely adjusted.

[0019] 2. The present invention utilizes the elastic shrinkable material of the sunshade body, which allows it to automatically shrink and reset itself when the traction rope is released, eliminating the need for an additional reset mechanism. This has the advantages of simplifying the overall structure and reducing costs.

[0020] 3. This invention achieves reliable transmission and high torque transmission capacity through spline connection and the function of the winding wheel. It can ensure that the rotational motion of the drive motor is stably transmitted to the traction rope, and also winds and stores the traction rope, ensuring the neatness and reliability of the winding and avoiding the tangling and mess of the traction rope. It has the advantages of simple structure, convenient assembly and maintenance, reliable and neat winding, and improved system operation reliability and service life. Attached Figure Description

[0021] Figure 1 A schematic diagram of a vehicle window sunshade mechanism in a stacked configuration provided by the present invention; Figure 2 This invention provides a schematic diagram of a vehicle window sunshade mechanism adapted to the shape of a vehicle window. Figure 3 This invention provides a schematic diagram of a car window sunshade mechanism in a retracted and reset state. Figure 4 A schematic diagram of the drive motor, splined shaft, and splined sleeve provided by the present invention; Figure 5 This is a schematic diagram of the structure of the winding wheel and spline sleeve provided by the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Sunshade curtain body; 2. Traction rope; 3. Drive motor; 4. Control module; 5. Winding wheel; 101. First material layer; 102. Second material layer; 201. Spline sleeve; 301. Spline shaft; 2011. First spline sleeve; 2012. Second spline sleeve. Detailed Implementation

[0023] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0024] Example 1 like Figures 2 to 5 As shown in the figure, an embodiment of the present invention provides a car window sunshade mechanism, including a sunshade body 1, six traction ropes 2, and six drive motors 3. The sunshade body 1 is made of elastic shrinkable material and is used to cover at least part of the car window area. The overall outline of the sunshade body 1 matches the outline of the target car window, and its size is slightly larger than the car window opening size to ensure that it can fully cover the car window area when fully unfolded. The sunshade body 1 is made of a material with good elastic recovery performance, so that it can automatically shrink and return to the initial folded state when no external force is applied. The six traction ropes 2 are evenly distributed on the edge of the sunshade body 1. The actual number of traction ropes 2 used can be selected according to the complexity of the shape of the car window. For a relatively regular-shaped car window, four to six traction ropes 2 can be set; for an irregularly shaped car window, eight to ten traction ropes 2 can be set. One end of each traction rope 2 is fixedly connected to the edge of the sunshade body 1, and the other end is fixedly connected to a spline sleeve 201. The traction rope 2 can be made of high-strength flexible rope, such as nylon rope, steel wire rope, or aramid fiber rope, to ensure sufficient tensile strength and abrasion resistance during long-term use. Six drive motors 3 are evenly and fixedly installed around the vehicle windows, at positions corresponding to the traction ropes 2. A splined shaft 301 is fixedly mounted on the output shaft of each drive motor 3. The splined shaft 301 is splinedly connected to the splined sleeve 201. Each drive motor 3 independently winds or releases the traction rope 2 via the splined shaft 301 and the splined sleeve 201. The drive motor 3 needs to be an existing drive motor with a self-locking function, so that when it stops running, it can maintain the position of the output shaft by relying on its own structure or the matching locking mechanism to resist the reverse torque generated by the elastic contraction force of the sunshade body 1. At the same time, in order to prevent the edge of the sunshade body 1 from being torn by the traction rope 2, the edge of the sunshade body 1 can be sewn with an edging. This edging can significantly enhance the structural strength of the edge of the sunshade body 1, so that the traction force of the traction rope 2 is distributed and transmitted to the edge of the sunshade body 1 through the edging, avoiding the concentrated tension of the traction rope 2 directly acting on the curtain substrate and causing tearing damage, effectively improving the durability and service life of the sunshade body 1. The edging also has the functions of preventing fraying and preventing frayed edges, keeping the edge of the curtain neat and beautiful.

[0025] In this embodiment, the drive motor 3 is preferably a stepper motor or a servo motor, so as to accurately control the rotation angle of the output shaft, thereby accurately controlling the winding amount of the traction rope 2; the drive motor 3 is fixedly installed at a predetermined position on the window frame by a motor mounting bracket, and the installation method can be bolt connection, welding or snap-fit.

[0026] The working principle of this embodiment is as follows: Each drive motor 3 operates independently, controlling the winding or unwinding of the corresponding traction rope 2 by rotating its output shaft. When a drive motor 3 rotates in the forward direction, its output shaft drives the spline shaft 301 to rotate. The spline shaft 301, through the spline connection, drives the spline sleeve 201 and the traction rope 2 to rotate, causing the traction rope 2 to wind around the circumferential surface of the spline sleeve 201. The effective length of the traction rope 2 is shortened, and the edge of the sunshade curtain body 1 at that position is pulled to expand the light blocking. When a drive motor 3 rotates in the reverse direction, its output shaft rotates in the reverse direction, releasing the wound traction rope 2. The edge of the sunshade curtain body 1 at that position contracts inward under its own elastic contraction force, thus reducing the light blocking range. By controlling the rotation direction and rotation angle of each drive motor 3 separately, the displacement of each traction point on the edge of the sunshade curtain body 1 can be adjusted independently, thereby achieving free adjustment of the overall shape of the sunshade curtain body 1.

[0027] Among them, such as Figure 4 As shown, it also includes a control module 4. Each control module 4 is electrically connected to a drive motor 3 and is fixedly installed on the housing of the corresponding drive motor 3. The control module 4 uses two switch buttons. They are used to control the operating status of the corresponding drive motor 3. The two switch buttons are for forward and reverse rotation control functions, that is, the forward and reverse rotation of the motor can be controlled by setting two buttons respectively.

[0028] The spline connection between the spline shaft 301 and the spline sleeve 201 is a static connection, and the spline sleeve 201 is axially fixed. After the spline sleeve 201 is fitted onto the spline shaft 301, it is fixed in the axial direction of the spline shaft 301 by axial positioning structures such as snap rings, and no relative axial movement can occur between the spline sleeve 201 and the spline shaft 301. The inner hole of the spline sleeve 201 is an internal spline hole, which mates with the external spline of the spline shaft 301. The two are relatively fixed in the circumferential direction and cannot rotate relative to each other.

[0029] Among them, such as Figure 5 As shown, the spline sleeve 201 has a winding wheel 5 on its circumferential side for winding and storing the traction rope 2. The winding wheel 5 is fixedly mounted on the outer circumferential surface of the spline sleeve 201, coaxially mounted with the spline sleeve 201 and rotating synchronously. The outer circumferential surface of the winding wheel 5 is a smooth cylindrical surface, or is provided with a spiral guide groove to guide the traction rope 2 to be wound evenly on it. One end of the traction rope 2 is fixedly connected to the outer circumferential surface of the winding wheel 5. When the drive motor 3 drives the spline shaft 301 to rotate, the spline sleeve 201 drives the winding wheel 5 to rotate synchronously, and the traction rope 2 is neatly wound on the outer circumferential surface of the winding wheel 5. The setting of the winding wheel 5 avoids the slippage or messy accumulation that may occur if the traction rope 2 is directly wound on the surface of the spline sleeve 201, ensuring the reliability and neatness of the winding. The diameter of the winding wheel 5 can be designed according to the diameter of the traction rope 2 and the required winding length, and is generally preferably 10mm-30mm.

[0030] This also includes a power module; the power module is an on-board power supply used to power the drive motor 3 and other modules; the power module directly uses the DC power output from the vehicle's own battery or generator. The drive motor 3 is connected to the vehicle's power system via wires, and the vehicle's power system provides it with operating power. The control module 4 or controller is also powered by the vehicle's power system.

[0031] Example 2 The difference compared to Example 1 is that, as shown in Example 2, ... Figure 4 As shown, in this embodiment, the spline connection between the spline shaft 301 and the spline sleeve 201 is a dynamic connection, allowing the spline sleeve 201 to slide axially. After the spline sleeve 201 is fitted onto the spline shaft 301, the spline sleeve 201 can slide freely along the axial direction of the spline shaft 301, but the two remain relatively fixed in the circumferential direction. The inner hole of the spline sleeve 201 is an internal spline hole, which cooperates with the external spline of the spline shaft 301. The spline sleeve 201 can slide along the axial direction of the spline shaft 301 but cannot rotate relative to it. This allows the end of the traction rope 2 to automatically adjust its position axially according to the number of layers of the sunshade body 1 during the winding process, avoiding the traction rope 2 from overlapping or getting stuck during the winding process, and ensuring the uniformity and smoothness of the winding. At the same time, the dynamic connection method also facilitates the quick assembly and disassembly of the spline sleeve 201 and the spline shaft 301.

[0032] The system also includes a controller, which is electrically connected to each drive motor 3 and is used to independently control the operating status of each drive motor 3. The controller is a central control unit that can be installed in the center console or door trim panel of the vehicle. The controller is electrically connected to each drive motor 3 through a wiring harness. The user inputs shape adjustment commands to the controller through an operation panel such as a touch screen or button panel. The controller sends control signals to each drive motor 3 according to the received commands, and independently controls the rotation direction, rotation angle and rotation speed of each drive motor 3.

[0033] Among them, such as Figure 1 As shown, the sunshade body 1 includes at least a first material layer 101 and a second material layer 102 stacked together, and the spline sleeve 201 includes at least a first spline sleeve 2011 and a second spline sleeve 2012. Specifically, the first material layer 101 is made of an elastic material with excellent light-shielding properties, which can be a high-density elastic fabric or an elastic film coated with a light-shielding coating; the edges of the first material layer 101 are uniformly fixedly connected or sleeved to one end of each traction rope 2, and the other end of each traction rope 2 is splinedly connected to the spline shaft 301 of the drive motor 3 through the first spline sleeve 2011; the first material layer 101 serves as a light-shielding layer, and its main function is to block light transmission and provide high light-shielding performance; the first material layer 101 is connected to the drive motor 3 through the traction rope 2 and the first spline sleeve 2011, so that the first material layer 101 can be independently driven to unfold or retract; Specifically, the second material layer 102 is made of an elastic material with a certain degree of light transmittance. The edges of the second material layer 102 are uniformly fixedly connected or sleeved to one end of each traction rope 2. The other end of each traction rope 2 is splinedly connected to the spline shaft 301 of the drive motor 3 through the second spline sleeve 2012. As a light-transmitting layer, the second material layer 102 mainly functions to retain a certain degree of light transmittance while blocking some light, so as to meet the basic requirements for visibility during driving. The second material layer 102 is connected to the drive motor 3 through the traction rope 2 and the second spline sleeve 2012, so that the second material layer 102 can be independently driven to unfold or retract. When used in conjunction with the first material layer 101, it can achieve different combinations of light-blocking adjustments. Specifically, the second material layer 102 is located between the first material layer 101 and the window, and the second spline sleeve 2012 is located inside the first spline sleeve 2011. If the user needs a high level of sun shading, the first material layer 101 and the second material layer 102 can be unfolded simultaneously. When the user only needs moderate sun shading and to maintain a certain field of vision, only the second material layer 102 can be unfolded while the first material layer 101 remains folded. When sun shading is not required, both layers can be folded up.

[0034] Among them, such as Figure 4As shown, when the first spline sleeve 2011 slides out from the outer end of the spline shaft 301, the first spline sleeve 2011 is in a disengaged state from the spline shaft 301; when the second spline sleeve 2012 slides out from the outer end of the spline shaft 301, the second spline sleeve 2012 is in a disengaged state from the spline shaft 301; since the spline shaft 301 and the spline sleeve 201 are dynamically connected, the spline sleeve 201 can slide along the axial direction of the spline shaft 301; when a certain material layer is not needed to participate in shading, the corresponding spline sleeve can be slid outward along the spline shaft 301 to make it slide out and disengage from the spline shaft 301. After losing the traction force of the traction rope 2, the material layer automatically retracts to a closed state under its own elastic contraction force. During use, to prevent detachment, a limit post can be inserted into the outer end of the spline shaft 301 to prevent it from detaching during use. When it is necessary to remove the first spline sleeve 2011 or the second spline sleeve 2012, the limit post can be pulled out to perform the removal operation. At the same time, the outer end of the spline shaft 301 also needs to be covered with anti-collision pads and other protective measures to avoid accidental damage.

[0035] Among them, such as Figure 1 As shown, the second material layer 102 is an elastic mesh fabric; the elastic mesh fabric is made of polyester or nylon multifilament interwoven with spandex covered yarn, and the mesh size is 0.5mm-10mm; the polyester or nylon multifilament provides good abrasion resistance and tensile strength, so that the elastic mesh fabric maintains structural integrity during repeated stretching and shrinking; the spandex covered yarn gives the mesh fabric excellent elastic shrinkage performance, so that the second material layer 102 can quickly and evenly retract automatically when the traction rope 2 is released.

[0036] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A car window sunshade mechanism, characterized in that, include: The sunshade body (1) is made of elastic shrinkable material and is used to cover at least part of the vehicle window area; Several traction ropes (2) are evenly distributed at the edge of the sunshade curtain body (1). One end of each traction rope (2) is connected to the edge of the sunshade curtain body (1), and the other end is fixedly connected to a spline sleeve (201). Several drive motors (3) are evenly and fixedly installed around the vehicle window and at positions corresponding to the traction ropes (2). A spline shaft (301) is fixedly provided on the output shaft of each drive motor (3). The spline shaft (301) is splinedly connected to the spline sleeve (201). Each drive motor (3) performs independent winding or releasing actions on the traction rope (2) through the spline shaft (301) and the spline sleeve (201).

2. The vehicle window sunshade mechanism as described in claim 1, characterized in that, It also includes a control module (4), each of which is electrically connected to one of the drive motors (3) and is fixedly installed on the housing of the corresponding drive motor (3); the control module (4) adopts a switch button; the control module (4) is used to control the operating state of the corresponding drive motor (3).

3. The vehicle window sunshade mechanism as described in claim 1, characterized in that, It also includes a controller, which is electrically connected to each of the drive motors (3) and is used to independently control the operating status of each of the drive motors (3).

4. The vehicle window sunshade mechanism as described in claim 1, characterized in that, The spline connection between the spline shaft (301) and the spline sleeve (201) is a static connection, and the spline sleeve (201) is axially fixed.

5. A car window sunshade mechanism as described in claim 1, characterized in that, The spline connection between the spline shaft (301) and the spline sleeve (201) is a dynamic connection, allowing the spline sleeve (201) to slide axially.

6. A car window sunshade mechanism as described in claim 5, characterized in that, The sunshade body (1) includes at least a first material layer (101) and a second material layer (102) stacked together, and the spline sleeve (201) includes at least a first spline sleeve (2011) and a second spline sleeve (2012). The first material layer (101) is a light-shielding layer. The edge of the first material layer (101) is uniformly fixedly connected or sleeved to one end of each of the traction ropes (2). The other end of each of the traction ropes (2) is splinedly connected to the spline shaft (301) of the drive motor (3) through the first spline sleeve (2011). The second material layer (102) is a light-transmitting layer. The edge of the second material layer (102) is uniformly fixedly connected or sleeved to one end of each of the traction ropes (2). The other end of each of the traction ropes (2) is splinedly connected to the spline shaft (301) of the drive motor (3) through the second spline sleeve (2012). The second material layer (102) is located between the first material layer (101) and the window, and the second spline sleeve (2012) is located inside the first spline sleeve (2011).

7. A car window sunshade mechanism as described in claim 6, characterized in that, When the first spline sleeve (2011) slides out from the outer end of the spline shaft (301), the first spline sleeve (2011) is disengaged from the spline shaft (301); When the second spline sleeve (2012) slides out from the outer end of the spline shaft (301), the second spline sleeve (2012) is disengaged from the spline shaft (301).

8. A car window sunshade mechanism as described in claim 6, characterized in that, The second material layer (102) is an elastic mesh fabric; the elastic mesh fabric is made of polyester or nylon multifilament interwoven with spandex covered yarn, and the mesh size is 0.5mm-10mm.

9. A car window sunshade mechanism as described in claim 1, characterized in that, The spline sleeve (201) is provided with a winding wheel (5) on its peripheral side for winding and storing the traction rope (2).

10. A car window sunshade mechanism as described in claim 1, characterized in that, It also includes a power module; the power module is an on-board power supply used to power the drive motor (3) and each module.

Images