Direct drive sunshade curtain

Abstract

The technical key points of a direct drive sunshade curtain are as follows: a frame assembly comprising a pair of guide rail assemblies; a curtain cloth assembly, one end of which is wound on a sunshade curtain rotating shaft and the other end of which is fixed on a sunshade curtain pull rod; the sunshade curtain pull rod comprises a hollow main body provided with a middle open through groove at a rear end and an upper open through groove at a front end, a spring sleeve for installing a spring is limited in the middle open through groove, and the curtain cloth assembly front end is embedded in the upper open through groove through a sunshade curtain steel wire; a curtain cloth driving assembly comprising a pair of wire wheels installed at both ends of the sunshade curtain rotating shaft, one or two motors for driving the wire wheels, a pair of pulleys located at the far end of the sunshade curtain rotating shaft, and a pair of steel wire pull lines; the sunshade curtain pull rod moves between the pulleys and the wire wheels along with the sunshade curtain sliding block under the driving of the motor, and the curtain cloth assembly is stretched or reeled. The direct drive sunshade curtain has the advantages of simple structure, convenient use and the like.

Description

Technical Field

[0001] This utility model relates to a non-fixed vehicle roof, specifically a direct-drive sunshade. Background Technology

[0002] Traditional sunshades employ a mechanical transmission architecture driven by a flexible shaft and coupled with slider guide rails. Core components include a front crossbeam, left and right guide rails, a rear crossbeam, a sunshade slider assembly, the sunshade fabric, and a motor. However, this structure suffers from the following technical problems: Z-axis space redundancy: The front and rear crossbeams, along with multiple guide rails, result in significant vertical (Z-axis) space occupancy, with conventional products reaching a thickness of 60-70mm, compressing the vehicle's headroom and the visible area of ​​the sunroof opening.

[0003] Abnormal noise from friction between the flexible shaft and the guide groove: When the plastic coating of the flexible shaft is exposed, it will produce a high-frequency scraping sound by rubbing against the guide groove of the seat (such as the metallic collision sound that may occur in the Changan UNI-V model after driving 30,000 kilometers).

[0004] Slider jamming and squealing: When the slider and the guide rail running groove are not properly matched, a high-frequency vibration sound is generated.

[0005] High system frictional resistance: bending and deformation of the flexible shaft, jamming of the slider, etc. lead to excessive motor load, increased operating current, increased energy consumption, and accelerated wear of components.

[0006] Low energy efficiency: The mechanical transmission efficiency of traditional structures is less than 80%, which increases energy consumption.

[0007] The plastic coating process requires high precision: the plastic coating of the flexible shaft and the slider needs to be controlled within ±0.3mm. In actual production, mold deviation or material deformation can easily lead to exposed iron or jamming.

[0008] High maintenance costs: The abnormal noise problem requires disassembly and repair of parts, which increases after-sales costs. Utility Model Content

[0009] The purpose of this invention is to provide a direct-drive sunshade curtain that fundamentally solves the above-mentioned problems. It has the advantages of simple structure and convenient use.

[0010] To achieve the above objectives, this utility model provides the following technical solution: The direct-drive sunshade curtain, its key technical features are: a frame assembly including a pair of guide rail assemblies; a curtain assembly, one end of which is wound around the sunshade curtain pivot, and the other end fixed to the sunshade curtain rod; the sunshade curtain rod includes a hollow main body with a centrally open through groove at the rear end and an upperly open through groove at the front end, a spring sleeve for installing a spring is limited within the centrally open through groove, and the front end of the curtain assembly is embedded in the upperly open through groove via a sunshade curtain steel wire; a curtain drive assembly including a pair of... The system includes pulleys installed at both ends of the sunshade's rotating shaft, one or two motors for driving the pulleys, a pair of pulleys located at the far end of the sunshade's rotating shaft, and a pair of steel wire pull cords. Sunshade sliders are fixed at both ends of the sunshade rod, and springs limit the movement inside the sunshade rod. The first fixed end of the steel wire pull cord is fixed to the corresponding side of the sunshade slider, and the second fixed end of the steel wire pull cord passes around the corresponding side of the pulley and pulley and is fixed to the corresponding end of the spring. Driven by the motors, the sunshade rod moves between the pulleys and pulleys as the sunshade sliders move, extending or retracting the curtain assembly.

[0011] Furthermore, a slider pulley is installed on the sunshade slider, and the second fixed end of the steel wire pull is fixed to the spring after the slider pulley changes direction.

[0012] Furthermore, the spool includes an axially recessed columnar body that engages with the end of the spool sleeve, an annular groove on the columnar body, and annular winding grooves on the inner and outer sides of the annular groove.

[0013] Furthermore, the first and second aluminum sleeves of the wire pull line are pressed and fixed at intervals on the wire pull line. The first fixed end of the wire pull line is fixed to the sunshade slider through the second aluminum sleeve and extends forward. It is fitted to the pulley from the inside. After a 180° change of direction, it extends to the rear of the guide rail assembly to the spool and is wound on the outer winding groove in the first winding direction. Then, it is clamped to the annular groove in the middle of the spool through the second aluminum sleeve. After a 180° change of direction, it is wound on the inner winding groove in the opposite direction of the first winding direction and extends to the front end of the guide rail assembly. After a 90° change of direction, it is hung on the spring.

[0014] Furthermore, the first winding direction is either clockwise or counterclockwise.

[0015] Furthermore, a pulley mounting base is fixed at the front end of the guide rail assembly, and the pulley is mounted on the pulley mounting base. A sunshade mounting base is fixed at the bottom of the rear end of the guide rail assembly. A motor or sunshade shaft mounting base is fixed at the bottom of the sunshade mounting base, and a sunshade shaft mounting base is also fixed at the bottom of the sunshade mounting base.

[0016] Furthermore, the front end of the sunshade fixing seat is equipped with a pulley with a rotating shaft parallel to the pulley sleeve.

[0017] The beneficial effects of this utility model are as follows: The side-mounted motor layout, compared to the traditional structure where the motor and transmission components are integrated in the Z-direction (vertical mounting surface direction), significantly reduces the Z-direction dimensional redundancy of the device, avoiding the Z-direction space occupation problem caused by the superposition of the motor and flexible shaft transmission mechanism. This design frees up more vertical space in the cabin / interior environment, significantly improving the headroom redundancy for passengers or the adaptability to the roof space of building interiors. It is particularly suitable for scenarios with stringent requirements for installation space dimensional accuracy, such as automotive roofs and rail transit vehicle passenger compartments, meeting the needs of product miniaturization design. The design utilizes a steel wire pull cable as the power transmission carrier, replacing the traditional sliding friction transmission structure of a flexible shaft-base running groove. Firstly, the line contact transmission of the steel wire pull cable effectively reduces frictional resistance torque with surrounding components, decreasing the motor drive load and thus reducing motor operating current, optimizing energy consumption, suppressing motor heat generation, and extending motor lifespan. Secondly, the steel wire pull cable transmission avoids the rigid friction between the traditional flexible shaft and the groove wall, allowing for lower operating noise sound pressure levels, meeting automotive NVH (noise, vibration, and harshness) performance standards and building interior noise reduction requirements, thereby improving user comfort. The steel wire pull cable and the sunshade slider adopt a modular mating structure. Compared to the traditional plastic-coated bonding process of flexible shafts and sliders (which requires strict control of plastic coating thickness and coaxiality), the mating precision requirements are easier to meet, significantly simplifying the assembly process. This design can shorten the production assembly cycle of a single product, reduce labor / equipment debugging costs, and has good adaptability to automated assembly, making it suitable for large-scale batch production lines, improving overall production efficiency, and solving the assembly bottleneck problem caused by the high mating precision requirements of traditional processes. By using wire mesh transmission, the risk of transmission jamming caused by "coaxiality deviation of the flexible shaft hole" in traditional flexible shaft assembly is eliminated. Furthermore, the problem of abnormal noise during operation caused by "exposed iron and uneven thickness of the plastic coating layer" in the traditional flexible shaft-slider plastic coating process is completely solved. This not only reduces rework time and debugging costs before product delivery but also lowers the after-sales failure rate, effectively controlling the product defect rate. Simultaneously, it improves the long-term reliability of the device, reduces subsequent maintenance costs, and combines economic benefits with user experience value. Attached Figure Description

[0018] Figure 1 This is an exploded structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of this utility model in use.

[0020] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along line AA.

[0021] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure along line BB.

[0022] Figure 5 for Figure 2 A schematic diagram of the cross-sectional structure along line CC.

[0023] Figure 6 for Figure 2 A magnified schematic diagram of part D in the middle section. Detailed Implementation

[0024] The following combination Figures 1-6 The specific content of this utility model will be described in detail through specific embodiments. The direct-drive sunshade mainly includes a frame assembly and a roller blind assembly. The frame assembly includes a pair of left guide rail assemblies 6 and right guide rail assemblies 7, a front crossbeam assembly 1 fixed between the left guide rail assembly 6 and the right guide rail assembly 7 by self-tapping screws 2, and a rear crossbeam assembly 10 fixed between the left guide rail assembly 6 and the right guide rail assembly 7 by bolts 11.

[0025] The roller blind assembly includes a sunshade swivel 21 mounted at the rear end of the left guide rail assembly 6 and the right guide rail assembly 7; a sunshade rod 32 slidably mounted at the far end of the sunshade swivel 21; a curtain assembly 22 rear-end rolled up and stored on the sunshade swivel 21 and front-end fixed to the sunshade rod 32; a left pulley fixing seat 4 and a right pulley fixing seat 5 equipped with pulleys 3 fixed at the front end of the left guide rail assembly 6 and the right guide rail assembly 7; and a left sunshade fixing seat 13 and a right sunshade fixing seat 13 fixed at the bottom of the rear end of the left guide rail assembly 6 and the right guide rail assembly 7. The components include: a fixed seat 14; a motor 23 fixed to the bottom of the right sunshade fixing seat 14 by a motor bolt 24; a sunshade shaft fixing seat 15 fixed to the left sunshade fixing seat 13; a spool sleeve 20 and a sunshade shaft 21 rotatably installed between the left sunshade fixing seat 13 and the right sunshade fixing seat 14 from back to front; a left spool 18 and a right spool 19 snapped and fixed at both ends of the spool sleeve 20; a right sunshade slider 29 and a left sunshade slider 30 fixed at both ends of the sunshade pull rod 32; and two steel wire pull lines 17.

[0026] Preferably, the left pulley fixing seat 4 or the right pulley fixing seat 5 is fixed to the front end of the left guide rail assembly 6 or the right guide rail assembly 7, and a limiting groove is provided on the outer side of the left pulley fixing seat 4 or the right pulley fixing seat 5 to limit the left and right swaying distance of the steel wire 17 during movement and avoid interference with other structures. The pulley 3 is installed on the inner front end of the left pulley fixing seat 4 or the right pulley fixing seat 5 with its rotating shaft perpendicular to the guide rail assembly.

[0027] Preferably, the rear ends of the left guide rail assembly 6 and the right guide rail assembly 7 are respectively provided with a left rear stop block 8 and a right rear stop block 9 to limit the maximum backward stroke of the sunshade curtain rod 32 and prevent the sunshade curtain rod 32 from being pulled too far back.

[0028] Preferably, the front end of the left sunshade fixing seat 13 or the right sunshade fixing seat 14 is also provided with a pulley 12 with a rotating shaft parallel to the pulley sleeve 20, which is mainly used to guide and limit the outer steel wire pulley 17.

[0029] The left and right sunshade sliders 30 and 29 are equipped with slider pulleys 28 whose rotating shafts are perpendicular to the left guide rail assembly 6 or the right guide rail assembly 7. The sunshade rotating shaft 21 is rotatably mounted between the left and right sunshade fixing seats 13 and 14. The sunshade pull rod 32 is a hollow body with a centrally open through groove at the rear end and an upper open through groove at the front end. A spring sleeve 27 is limited in the centrally open through groove, and a spring 26 is installed inside the spring sleeve 27. The rear end of the curtain assembly 22 is axially bonded to the sunshade rotating shaft 21, and the front end of the curtain assembly 22 is embedded in the upper open through groove through the sunshade steel wire 25.

[0030] The output shaft of motor 23 is fixed inside the right spool 19, synchronously driving the spool sleeve 20 and the left spool 18 to rotate. The rotation of the left spool 18 and the right spool 19 causes the steel wire pull wire 17 to unwind or wind in the winding groove. With the elastic force of the spring 26, the curtain assembly 22 is retracted or unfolded along the guide rail assembly by pulling the sunshade curtain rod 32.

[0031] The specific structure of the steel wire guide 17 and its related actuators will be explained mainly based on the steel wire guide 17 on the left and its related actuators. On the left side, the steel wire pull line 17 is press-fitted with the first pull line aluminum sleeve 16 and the second pull line aluminum sleeve 31 at intervals. One end of the steel wire pull line 17 is fixed to the right sunshade slider 29 and the left sunshade slider 30 through the second pull line aluminum sleeve 31 and extends forward. It is fitted to the pulley 3 from the inside. After changing direction by 180°, it extends to the rear of the left guide rail assembly 6 and the right guide rail assembly 7 to the left wire wheel 18 or the right wire wheel 19 and is wound on the outer winding groove in the first winding direction. Then, it is snapped into the annular groove in the middle of the left wire wheel 18 or the right wire wheel 19 through the second pull line aluminum sleeve 31. After changing direction by 180°, it is wound on the inner winding groove in the opposite direction of the first winding direction and extends to the front end of the left guide rail assembly 6 and the right guide rail assembly 7. After changing direction by 90° by the slider pulley 28, it is hung on the spring 26.

[0032] The left sunshade slider 30 has a slider pulley 28 with a rotating shaft perpendicular to the rail surface of the left guide rail assembly 6 on its outer side. One end of the steel wire pull cable 17 is fixed to the left side of the spring 26 located inside the sunshade pull rod 32. After changing direction by 90° via the slider pulley 28, it extends backward along the left guide rail assembly 6. It is assembled on the left pull wheel 18 through the first pull wire aluminum sleeve 16 pressed on the steel wire pull cable 17, so that when the left pull wheel 18 rotates, it can drive the steel wire pull cable 17 to move. After being fixed by the first pull wire aluminum sleeve 16, the steel wire pull cable 17 is wound around the left pull wheel 18. After changing direction by 180°, it extends forward along the left guide rail assembly 6 to the outside of the pulley 3. After the pulley 3 changes direction by 180°, it is fixed on the left sunshade slider 30 through the second pull wire aluminum sleeve 31.

[0033] The left reel 18 includes an outer shaft for rotatably engaging with the sunshade shaft fixing seat 15, an annular groove for fixing the first pull line aluminum sleeve 16, an annular winding groove for limiting the steel wire pull line 17 on both the inner and outer sides of the annular groove, and a columnar elastic groove for mounting on the end of the reel sleeve 20. The steel wire pull line 17 is wound in opposite directions on the two winding grooves respectively. For example, the steel wire pull line 17 is wound counterclockwise on the outer winding groove and clockwise on the inner winding groove.

[0034] The steel wire pull cord 17 on the right and its associated linkage structure are the same as those on the left. The only difference is that the left pulley 18 is rotatably fitted onto the sunshade curtain shaft fixing seat 15 and rotates passively. The motor 23 is mounted on the right sunshade curtain fixing seat 14, and the right pulley 19 is rotatably mounted on the output shaft of the motor 23. The right pulley 19 and the motor 23 are separated on both sides by the right sunshade curtain fixing seat 14 and are connected only through the output shaft of the motor 23, so that the right pulley 19 can rotate under the drive of the motor 23.

[0035] The right reel 19 includes a shaft hole for engaging the drive shaft of the motor 23, an annular groove for fixing the first pull wire aluminum sleeve 16, an annular winding grooves for limiting the steel wire pull wire 17 on both the inner and outer sides of the annular groove, and a columnar elastic groove for mounting on the end of the reel sleeve 20. The steel wire pull wire 17 is wound in opposite directions on the two winding grooves respectively. For example, the steel wire pull wire 17 is wound counterclockwise on the outer winding groove and clockwise on the inner winding groove.

[0036] Working principle: When the sunshade is closed, the output shaft of motor 23 rotates counterclockwise to tighten the steel wire pull cable 17. One end of the aluminum sleeve 31 of the second pull cable 17 pulls the left and right sunshade sliders 30 and the sunshade pull rod 32 forward. The steel wire pull cable 17 fixed on one side of the spring 26 releases the steel wire pull cable 17 counterclockwise.

[0037] During the opening / closing process of the sunshade curtain, the sunshade curtain pivot 21 always provides the curtain roll-up force, and the spring 26 in the sunshade curtain rod 32 is always in a pre-tensioned state; the operating principle is the opposite when the sunshade curtain is open.

[0038] In this utility model, the direction of the sunshade is based on the position on the vehicle, such as the front of the car corresponding to the front of the sunroof.

[0039] Figure labeling: 1 Front crossbeam assembly, 2 Self-tapping screw, 3 Pulley, 4 Left pulley fixing seat, 5 Right pulley fixing seat, 6 Left guide rail assembly, 7 Right guide rail assembly, 8 Left rear stop block, 9 Right rear stop block, 10 Rear crossbeam assembly, 11 Bolt, 12 Pull cord pulley, 13 Left sunshade fixing seat, 14 Right sunshade fixing seat, 15 Sunshade pivot fixing seat, 16 First pull cord aluminum sleeve, 17 Steel wire pull cord, 18 Left pulley, 19 Right pulley, 20 Pulley sleeve, 21 Sunshade pivot, 22 Curtain assembly, 23 Motor, 24 Motor bolt, 25 Sunshade steel wire, 26 Spring, 27 Spring sleeve, 28 Sliding pulley, 29 Right sunshade slider, 30 Left sunshade slider, 31 Second pull wire aluminum sleeve, 32 sunshade curtain pull rod.

Claims

1. A direct-drive sunshade curtain, characterized in that: include, The frame assembly includes a pair of guide rail assemblies (6, 7); The curtain assembly (22) is wound around the sunshade curtain pivot (21) at one end and fixed to the sunshade curtain rod (32) at the other end. The sunshade curtain rod (32) includes a hollow body with a central opening through groove at the rear end and an upper opening through groove at the front end. A spring sleeve (27) for installing a spring (26) is limited in the central opening through groove. The front end of the curtain assembly (22) is embedded in the upper opening through groove through the sunshade curtain wire (25). The curtain drive assembly includes a pair of pulleys (18, 19) mounted at both ends of the sunshade shaft (21), one or two motors (23) for driving the pulleys (18, 19), a pair of pulleys (3) located at the far end of the sunshade shaft (21), and a pair of steel wire pulls (17). The sunshade curtain rod (32) has sunshade curtain sliders (29, 30) fixed at both ends. The sunshade curtain rod (32) has a spring (26) for limiting the movement. The first fixed end of the steel wire pull line (17) is fixed on the sunshade curtain sliders (29, 30) on the corresponding side. The second fixed end of the steel wire pull line (17) passes around the pulley (3) and the spool (18, 19) on the corresponding side and is fixed to the corresponding end of the spring (26). Driven by a motor (23), the sunshade rod (32) moves between the pulley (3) and the roller (18, 19) along with the sunshade slider (29, 30), extending or retracting the curtain assembly (22).

2. The direct-drive sunshade curtain according to claim 1, characterized in that: The sunshade slider (29, 30) is equipped with a slider pulley (28), and the second fixed end of the steel wire pull (17) is fixed to the spring (26) after being reversed by the slider pulley (28).

3. The direct-drive sunshade curtain according to claim 1, characterized in that: The spools (18, 19) include a columnar body that is concave in the axial direction and engages with the end of the spool sleeve (20), an annular groove provided on the columnar body, and an annular winding grooves provided on the inner and outer sides of the annular groove.

4. The direct-drive sunshade curtain according to claim 1, characterized in that: The first pull wire aluminum sleeve (16) and the second pull wire aluminum sleeve (31) are pressed and fixed at intervals on the steel wire pull wire (17). The first fixed end of the steel wire pull wire (17) is fixed on the sunshade slider (29, 30) through the second pull wire aluminum sleeve (31) and extends forward. It is fitted on the pulley (3) from the inside. After changing direction by 180°, it extends to the rear side of the guide rail assembly (6, 7) to the wire wheel (18, 19) and is wound on the outer winding groove in the first winding direction. Then, it is clamped on the annular groove in the middle of the wire wheel (18, 19) through the second pull wire aluminum sleeve (31). After changing direction by 180°, it is wound on the inner winding groove in the opposite direction of the first winding direction and extends to the front end of the guide rail assembly (6, 7). After changing direction by 90°, it is hung on the spring (26).

5. The direct-drive sunshade curtain according to claim 4, characterized in that: The first winding direction is either clockwise or counterclockwise.

6. The direct-drive sunshade curtain according to claim 4, characterized in that: The front end of the guide rail assembly (6, 7) is fixed with a pulley fixing seat (4, 5), the pulley (3) is mounted on the pulley fixing seat (4, 5), the rear end of the guide rail assembly (6, 7) is fixed with a sunshade fixing seat (13, 14), the motor (23) or the sunshade shaft fixing seat (15) is fixed at the bottom of the sunshade fixing seat (13, 14), and the bottom of the sunshade fixing seat (13, 14) is also fixed with a sunshade shaft fixing seat (15).

7. The direct-drive sunshade curtain according to claim 1, characterized in that: The front end of the sunshade fixing base (13, 14) is provided with a pulley (12) with a rotating shaft parallel to the pulley sleeve (20).

Images