Direct-driven electric sunshade curtain

Abstract

The utility model relates to a direct-driven electric sunshade curtain, which comprises curtain cloth, one end of the curtain cloth is connected to a sliding block, and the curtain cloth is driven by the sliding block to unfold; the winding pipe is used for winding the other end of the curtain cloth; the wire rotating wheel is installed at the end of the winding pipe and driven by a motor to rotate, an inhaul cable is wound on the wire rotating wheel, and the movable end of the inhaul cable is connected to the sliding block; the wheel disc tensioning assembly is coaxially connected between the wire rotating wheel and the winding pipe and used for tensioning the wire rotating wheel; when the curtain cloth is in an unfolded or folded state, the wheel disc tensioning assembly is always kept in a load state. Compared with the prior art, the winding device has the advantages that the wheel disc tensioning assembly is arranged between the wire rotating wheel and the winding pipe, the wheel disc tensioning assembly is kept in a load state all the time, twisting force is exerted on the winding pipe and the wire rotating wheel at the two ends, and therefore the wire rotating wheel is in a pre-tightening state relative to the winding pipe; and the consistent rotating speed is kept in the rotating process.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a direct-drive electric sunshade. Background Technology

[0002] Currently, the opening and closing of the curtain in existing automotive electric sunroofs is generally achieved by a single motor driving a flexible shaft slider, which is connected to a pull rod, thereby moving the curtain back and forth. During the opening process, the curtain is rolled up by a roller to ultimately meet the functional requirements. Conventional roller assemblies usually consist of two springs. The roller assembly uses two springs to apply winding force to the wheels on both sides. Due to processing and assembly errors, the winding force of the two springs is prone to be inconsistent, resulting in inconsistent force on the wheels on both sides. This leads to inconsistent movement at both ends of the curtain, which in turn causes the curtain to jam and tilt.

[0003] Chinese invention patent CN117656790A discloses a roller assembly and a sunroof assembly. The roller assembly includes an inner tube, a connecting rod, two first pulleys, a spring fixing seat, a spring fixing shaft, a spring, and two roller supports. The advantages are: (1) It improves the position accuracy of the first pulleys, reduces the dimensional processing accuracy of the inner tube, and improves the service life of the roller assembly; at the same time, it ensures that the curtain is always taut, avoids sagging, and also prevents wrinkles; it ensures the consistency of the curtain's movement and solves the problem that when the pull rod is unevenly stressed, the two sides of the curtain move inconsistently, the pull rod tilts, and the curtain gets stuck in the guide rail and cannot continue to run; (2) The drive mechanism can be freely arranged at the front or rear, making the space arrangement more flexible in the overall vehicle design; (3) The synchronous belt pulley replaces the linear pulley, which can save about 20mm of space in the width direction of the sunroof assembly; (4) The synchronous belt drive can reduce the noise of the curtain during operation.

[0004] However, the roller pulls the rod via a synchronous belt, which has a large frictional force during transmission. This can cause the fabric to jam to some extent and increase the load on the electrodes. Utility Model Content

[0005] In order to solve the above-mentioned problems in the prior art, the present invention provides a direct-drive electric sunshade.

[0006] The above-mentioned problems of this utility model are solved by the following technical solution:

[0007] A direct-drive motorized sunshade includes,

[0008] The curtain is connected to a slider at one end and unfolded by the slider.

[0009] A winding tube, used to wind the other end of the curtain fabric;

[0010] A rotating reel, mounted at the end of the winding tube and driven to rotate by a motor, has a cable wound around it, and the movable end of the cable is connected to a slider.

[0011] The wheel tensioning assembly is coaxially connected between the rotating wheel and the winding tube, and is used to tension the rotating wheel;

[0012] When the curtain is in the unfolded or retracted state, the wheel tensioning component is always kept under load.

[0013] A further provision of the above technical solution is that the wheel tensioning assembly includes a tensioning spring and a spring fastening shaft, one end of the spring fastening shaft is fixed on the winding tube, and the other end is provided with a positioning part for the tensioning spring to be installed.

[0014] A further provision of the above technical solution is that the positioning part of the spring fastening shaft can extend into the hollow part in the center of the spring, and the spring fastening shaft is provided with a mounting hole, into which the end of the tension spring can be inserted.

[0015] A further feature of the above technical solution is that the outer periphery of the positioning part is provided with anti-slip texture.

[0016] A further provision of the above technical solution is that: the spring fastening shaft is also provided with a positioning hook, and the winding tube is provided with a positioning groove corresponding to the positioning hook.

[0017] A further provision of the above technical solution is that the spring fastening shaft and the winding tube are fixed at a punch point.

[0018] A further feature of the above technical solution is that the rotating wheel is a tapered frustum structure with a reduced diameter arranged from the inside to the outside, and a mounting part is provided on the inner end face extending toward the tension spring side, and the mounting part has a torsion groove.

[0019] A further provision of the above technical solution is that it includes a crossbeam fixed to the top of the vehicle, with pulleys on both sides of the crossbeam, and the cable passing around the pulleys and connecting to the slider.

[0020] A further provision of the above technical solution is that: a pulley fixing seat is provided on the crossbeam, the pulley is installed on the pulley fixing seat, and a gap is left between the pulley and the end face of the crossbeam.

[0021] A further provision of the above technical solution is that: guide blocks are installed at both ends of the slider, and cable grooves are provided on the guide blocks, with the cable being limited within the guide grooves.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. A wheel tensioning assembly is installed between the rotating reel and the winding tube, and the wheel tensioning assembly is always kept under load, so that both the winding tube and the rotating reel at both ends have torsional force, thereby so that the rotating reel is in a pre-tensioned state relative to the winding tube and maintains a consistent rotation speed during rotation.

[0024] 2. A spring fastening shaft is set to position the tension spring, so that the tension spring can remain in a stable state under load and will not twist, thus ensuring the assembly stability of each component. Attached Figure Description

[0025] Figure 1 This is a schematic diagram showing the sunshade curtain in its unfolded state.

[0026] Figure 2 This is a diagram showing the sunshade curtain in its retracted state.

[0027] Figure 3 This is a schematic diagram of the exploded structure of this utility model.

[0028] Figure 4 This is an exploded structural diagram of the spinning wheel, the wheel tensioning assembly, and the winding tube.

[0029] Figure 5 This is a schematic diagram of the assembly structure of the rotating reel and the tensioning assembly.

[0030] Figure 6 This is an exploded structural diagram of the pulley and crossbeam.

[0031] Figure 7 This is a schematic diagram showing the installation position of the pulley on the crossbeam.

[0032] Figure 8 This is a cross-sectional structural diagram of the wheel tensioning assembly in Example 2.

[0033] The attached image is labeled: 100, curtain fabric;

[0034] 200. Slider;

[0035] 300. Winding tube; 301. Positioning groove;

[0036] 400. Wire reel; 410. Mounting part; 411. Torsion groove;

[0037] 500. Electric motor;

[0038] 600, crossbeam;

[0039] 700, cable;

[0040] 800. Wheel tensioning assembly; 810. Tensioning spring; 820. Spring fastening shaft; 821. Positioning part; 822. Mounting hole; 823. Guide groove; 824. Positioning hook;

[0041] 1. Pulley; 2. Pulley mounting base; 2.1. Rotating groove; 2.2. Rotating groove; 3. Guide block; 3.1. Cable groove; 4. Drive shaft. Detailed Implementation

[0042] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0043] like Figure 1-8 As shown in the following embodiment, a direct-drive electric sunshade is disclosed.

[0044] Example 1

[0045] A direct-drive motorized sunshade includes,

[0046] The curtain 100 is connected at one end to the slider 200 and is unfolded by the slider 200;

[0047] The winding tube 300 is used to wind the other end of the curtain fabric 100;

[0048] A spool 400 is installed at the end of the winding tube 300 and driven to rotate by a motor 500. It has a cable 700 wound around it, and the movable end of the cable 700 is connected to the crossbeam 600.

[0049] The wheel tensioning assembly 800 is coaxially connected between the rotating wheel 400 and the winding tube 300, and is used to tension the rotating wheel 400.

[0050] When the curtain 100 is in the unfolded or retracted state, the wheel tensioning assembly 800 is always kept under load.

[0051] The above is the basic scheme of this embodiment.

[0052] Specific reference Figures 1-3 As shown, when the sunshade is not unfolded, the curtain 100 is wound and stored on the winding tube 300. When the sunshade is unfolded, the motor 500 drives the rotating wheel 400 to rotate, and the cable 700 on the rotating wheel 400 pulls the slider 200, causing the slider 200 to slide towards the crossbeam 600. At the same time, during the rotation of the rotating wheel 400, it drives the winding tube 300 to rotate, causing the winding tube 300 to release the rolled-up curtain 100. The released curtain 100 unfolds on the roof of the vehicle as the slider 200 moves, providing sunshade for the interior of the vehicle.

[0053] During the unfolding process, the wheel tensioning assembly 800 is always under load. That is to say, the wheel tensioning assembly 800 exerts a torsional force on both ends of the winding tube 300 and the rotating wheel 400, so that the rotating wheel 400 is in a pre-tensioned state relative to the winding tube 300 and maintains a consistent rotation speed during rotation.

[0054] If the rotation speeds of the spool 400 and the winding tube 300 are inconsistent, it will cause the traction speed of the cable 700 and the release speed of the curtain 100 to be inconsistent. If the traction speed of the cable 700 is too fast, the curtain 100 will not be able to keep up with the movement of the slider 200, resulting in jamming. If the traction speed of the cable 700 is too slow, the curtain 100 will be released too quickly, resulting in too many wrinkles in the released curtain 100.

[0055] Preferably, in this embodiment, the torsional force of the wheel tensioning assembly 800 on the rotating wheel 400 and the winding tube 300 is in opposite directions.

[0056] The wheel tensioning assembly 800 includes a tensioning spring 810 and a spring fastening shaft 820. One end of the spring fastening shaft 820 is fixed on the winding tube 300, and the other end is provided with a positioning part 821 for the tensioning spring 810 to be installed.

[0057] Reference Figure 3 As shown, a positioning part 821 is provided on the side of the spring fastening shaft 820 extending toward the tension spring 810, and the diameter of the positioning part 821 is smaller than the diameter of the main body of the spring fastening shaft 820.

[0058] Furthermore, the positioning part 821 of the spring fastening shaft 820 can extend into the hollow part in the center of the spring, and the spring fastening shaft 820 is provided with a mounting hole 822, so that the end of the tension spring 810 can be inserted into the mounting hole 822.

[0059] Mounting hole 822 is provided on the body of spring fastening shaft 820, and guide groove 823 is provided between mounting hole 822 and positioning part 821. The end of tension spring 810 is inserted into mounting hole 822, and the part between end of tension spring 810 and body is embedded in guide groove 823, thereby completing the fixed connection between tension spring 810 and spring fastening shaft 820.

[0060] Preferably, in this embodiment, in order to reduce the friction between the tension spring 810 and the spring fastening shaft 820, the outer periphery of the positioning part 821 is provided with anti-slip texture.

[0061] In this embodiment, the anti-slip texture is a recess on the outer periphery of the positioning part 821, which reduces the contact area between the inner ring of the tension spring 810 and the spring fastening shaft 820, thereby reducing the friction of the tension spring 810 when it is twisted, and thus reducing the load on the tension spring 810.

[0062] Preferably, in this embodiment, the tension spring 810 is a helical spring.

[0063] Based on the above settings, the tension spring 810 only exerts torsional force on both ends under load, without twisting itself, ensuring that it is coaxial with the winding tube 300 and the spool 400, thereby ensuring the stable assembly of each component.

[0064] In this embodiment, the fixing method between the spring fastening shaft 820 and the winding tube 300 is set as follows: the spring fastening shaft 820 is also provided with a positioning hook 824, and the winding tube 300 is provided with a positioning groove 301 corresponding to the positioning hook 824.

[0065] Furthermore, the end of the spring-fastening shaft 820 that inserts into the winding tube 300 has a chamfered structure, allowing it to be smoothly inserted into the winding tube 300. At the same time, the outermost diameter of the positioning hook 824 is larger than the inner diameter of the winding tube 300. The positioning hook 824 is set as an elastic hook. During installation, the positioning hook 824 bends and deforms, allowing the spring-fastening shaft 820 to extend into the winding tube 300 until the positioning hook 824 is engaged in the positioning groove 301 of the winding tube 300, at which point the spring-fastening shaft 820 can no longer extend in, and the installation is complete.

[0066] In this embodiment, a drive shaft 4 is provided on the motor 500. The drive shaft 4 passes through the rotating reel 400 and the tension spring 810 in sequence and extends to the spring fastening shaft 820 to drive the spring fastening shaft 820, thereby driving the winding tube 300 to rotate. The winding tube 300 then drives the rotating reel 400 through the wheel tensioning assembly 800.

[0067] In this embodiment, the rotating reel 400 is a tapered frustum structure with a reduced diameter arranged from the inside to the outside, and a mounting part 410 is provided on the inner end face facing the tension spring 810, and a torsion groove 411 is provided on the mounting part 410.

[0068] Specific reference Figure 4 and Figure 5 As shown, the outer periphery of the rotating reel 400 is provided with a winding groove for winding the cable 700. One end of the tension spring 810 is fixed to the spring fastening shaft 820, and the other end is sleeved on the mounting part 410 and embedded in the torsion groove 411. The function of the torsion groove 411 is the same as that of the mounting hole 822 and the guide groove 823.

[0069] In this embodiment, the outer periphery of the mounting part 410 is also provided with recessed textures to reduce friction.

[0070] In this embodiment, there are two rotating reels 400, located at both ends of the winding tube 300; one or two reel tensioning components 800 can be provided, and the motor 500 only needs to drive one of the rotating reels 400 on one side.

[0071] In this embodiment, a crossbeam 600 fixed to the top of the car is also included. Pulleys 1 are provided on both sides of the crossbeam 600, and the cable 700 passes around the pulleys 1 and is connected to the slider 200.

[0072] Specific reference Figure 6 As shown, pulley 1 is fixed at both ends of crossbeam 600 and located at both ends of slider 200. One end of cable 700 extends from pulley 400, passes around the outside of pulley 1, and connects to slider 200 on the inside of pulley 1. When pulley 400 rotates and pulls cable 700, it pulls the inner part of cable 700 of pulley 1 toward crossbeam 600, thereby causing slider 200 to slide toward crossbeam 600.

[0073] In this embodiment, to avoid friction caused by contact between the pulley 1 and the crossbeam 600, a pulley 1 fixing seat is provided on the crossbeam 600, the pulley 1 is installed on the pulley 1 fixing seat, and a gap is left between the pulley 1 and the end face of the crossbeam 600.

[0074] The pulley 1 has a fixed shaft with a rotating groove 2.1 that can accommodate the pulley 1, and the upper and lower sides of the rotating groove 2.1 have rotating grooves 2.2, into which the two rotating shafts of the pulley 1 are embedded.

[0075] Pulley 1 is suspended in the air by the action of the pulley 1 rotating seat and does not contact the end face of the crossbeam 600, thereby reducing the friction generated during rotation and extending its service life.

[0076] In addition, in this embodiment, guide blocks 3 are installed at both ends of the slider 200, and the guide blocks 3 are provided with cable 700 grooves, and the cable 700 is limited within the guide grooves 823.

[0077] Specific reference Figure 7 As shown, the guide block 3 is L-shaped, with one end close to the slider 200 and the other end inserted into the slider 200; the cable 700 extends from the inside of the pulley 1 into the slider 200 along the cable 700 groove and is fixed to the slider 200 or the guide block 3.

[0078] Example 2

[0079] This embodiment is an improvement on Embodiment 1, and its purpose is to provide a connection method between the wheel tensioning assembly and the winding tube. The specific implementation method is as follows:

[0080] Specific reference Figure 8As shown, the spring-fastening shaft 820 and the winding tube 300 can also be fixed by a punching point.

[0081] In this embodiment, a drive shaft 4 is provided on the motor 500. The drive shaft 4 passes through the rotating reel 400 and the tension spring 810 in sequence and extends to the spring fastening shaft 820 to drive the spring fastening shaft 820, thereby driving the winding tube 300 to rotate. The winding tube 300 then drives the rotating reel 400 through the wheel tensioning assembly 800.

[0082] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A direct drive motorized shade, characterized by: The utility model relates to a kind of curtain fabric (100), one end is connected in slider (200), is driven to unroll by slider (200); Winding pipe (300) for winding the other end of curtain fabric (100); Rotary drum (400) is installed in the end of winding pipe (300) and is driven to rotate by motor (500), it is wound with pull cable (700), and the active end of pull cable (700) is connected in slider (200); Wheel disc tensioning assembly (800) is coaxially connected between rotary drum (400) and winding pipe (300), for tensioning rotary drum (400); When curtain fabric (100) is unrolled or stored, wheel disc tensioning assembly (800) always keeps in load state. The wheel disc tensioning assembly (800) includes a tensioning spring (810) and a spring fastening shaft (820), one end of the spring fastening shaft (820) is fixed on the winding pipe (300), and the other end is provided with a positioning portion (821) for mounting the tensioning spring (810).

2. The direct drive electric sunshade according to claim 1, characterized in that: The positioning portion (821) of the spring fastening shaft (820) can extend into the spring center hollow portion, and the spring fastening shaft (820) is provided with a mounting hole (822), and the end of the tensioning spring (810) can be inserted into the mounting hole (822).

3. The direct drive electric sunshade according to claim 2, characterized in that: The outer periphery of the positioning portion (821) is provided with anti-skid lines.

4. A direct drive electric sunblind according to claim 2 or 3, characterized in that: The spring fastening shaft (820) is further provided with a positioning hook (824), and the winding pipe (300) is provided with a positioning groove (301) corresponding to the positioning hook (824).

5. The direct drive motorized shade of claim 2, wherein: The spring fastening shaft (820) and the winding pipe (300) are fixed by punching.

6. The direct drive motorized shade of claim 2, wherein: The rotary drum (400) is a conical frustum structure arranged from inside to outside, and an installation portion (410) is extended towards the side of the tensioning spring (810) on the inner end face, and a torsion groove (411) is arranged on the installation portion (410).

7. The direct drive motorized shade of claim 1, wherein: A cross beam (600) fixed on the top of the car is further included, pulleys (1) are arranged on both sides of the cross beam (600), and the pull cable (700) is connected with the slider (200) by passing through the pulleys (1).

8. The direct drive motorized shade of claim 1, wherein: The cross beam (600) is provided with a pulley (1) fixing seat, the pulley (1) is installed on the pulley (1) fixing seat, and a gap is left between the pulley (1) and the end face of the cross beam (600).

9. The direct drive motorized shade of claim 8, wherein: Guide blocks (3) are installed on both ends of the slider (200), the guide blocks (3) are provided with pull cable (700) grooves, and the pull cable (700) is limited in the guide groove (823).

10. The direct drive motorized shade of claim 8, wherein: ​

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