Reel assembly and sunroof assembly

Abstract

A reel assembly and a sunroof assembly having same. The reel assembly (10) comprises an inner tube (11), a connecting rod (12), two first pulleys (13), a spring retainer (141), a spring-retaining shaft (142), a spring (14), and two reel supports (15). The sunroof assembly (20) further comprises a driving mechanism (28) and timing belts (24), wherein the driving mechanism is connected to at least one first pulley and / or at least one second pulley. The reel assembly has long service life. A sunshade curtain of the sunroof assembly is always in a tightened state, thereby guaranteeing the movement consistency of the sunshade curtain; the driving mechanism can be selectively arranged at the front end or the back end, so that the space arrangement is more free in whole vehicle design; a cord pulley is replaced with a timing pulley, such that the space occupied can be saved for the sunroof assembly in the width direction of a vehicle, and timing belt transmission can reduce noise during operation of the sunshade curtain.

Description

A scroll assembly and a sunroof assembly

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 14, 2023, with application number 202311507986.7 and application name “A scroll assembly and sunroof assembly”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the field of vehicle technology, and in particular to a scroll assembly and a sunroof assembly. Background Art

[0003] At present, when the curtain of the existing electric sunroof of an automobile is opened or closed, it is generally driven by a single motor to drive a soft shaft slider, and the slider is connected to a pull rod, thereby driving the curtain to move back and forth. During the opening process, the curtain is retracted by applying force through the reel, ultimately meeting the functional requirements; the conventional reel assembly is usually composed of two springs (as shown in Figure 1), wherein the reel assembly uses two springs to apply retraction force to the wheels on both sides respectively. The two springs are subject to processing and assembly errors, and the retraction force is easily inconsistent, resulting in inconsistent force on the wheels on both sides, resulting in inconsistent movement of the two ends of the curtain, and then causing the curtain to get stuck and tilt.

[0004] Patent document: CN219055937U discloses a direct-drive sunroof sunshade structure, in which a transmission mechanism is used to drive the sunshade to open or close, but due to structural limitations, the motor can only be installed at one end of the roller blind shaft.

[0005] The existing technology mainly has the following deficiencies:

[0006] (1) The two ends of the existing reel assembly are two independent reeling mechanisms. Due to processing and assembly errors, the forces on the wheels on both sides are easily inconsistent, causing the curtain to easily get stuck and tilt during operation; the wheels on both sides of the existing reel assembly are prone to axial movement, causing uneven wear of the cable;

[0007] (2) The motor of the cord-driven sunshade can only be arranged on the same side as the reel, which has great limitations on space layout and position;

[0008] (3) The pull-cord direct drive sunshade uses a pull-cord drive, and the pulley occupies a large space in the vehicle width direction;

[0009] (4) The motor-driven flexible shaft of existing sunshade products is noisy and prone to abnormal noise.

[0010] Summary of the Invention

[0011] The object of the present invention is to provide a scroll assembly and a sunroof assembly in response to the problems raised in the above background technology.

[0012] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0013] A reel assembly comprising:

[0014] inner tube;

[0015] a connecting rod rotatably embedded in and passing through the inner tube;

[0016] Two first pulleys are respectively provided at both ends of the connecting rod and located outside the inner tube; the two first pulleys are fixedly connected to the connecting rod in the rotation direction of the connecting rod, and the two first pulleys are movably connected to the connecting rod in the axial direction of the connecting rod;

[0017] a spring fixing seat, disposed between the inner tube and the connecting rod and fixed to one end of the inner tube, the spring fixing seat being movably connected to the connecting rod in the axial direction of the connecting rod;

[0018] a spring fixed shaft, fixed to the connecting rod and located inside the inner tube;

[0019] a spring wound on the connecting rod, one end of the spring being fixed to the spring fixing seat, and the other end of the spring being fixed to the spring fixing shaft; and

[0020] Two reel supports are respectively provided at both ends of the connecting rod and located outside the first pulley; the spring has axial tension so that the two first pulleys are pushed outward in the axial direction of the connecting rod to the two reel supports.

[0021] Furthermore, the inner tube, the connecting rod, the first pulley and the spring are coaxially arranged.

[0022] Furthermore, the reel assembly also includes a fixed sleeve, which is arranged between the inner tube and the connecting rod and fixed to the other end of the inner tube; the connecting rod is rotatably mounted in the fixed sleeve.

[0023] In one embodiment, an inner sleeve is provided between the connecting rod and the spring.

[0024] In one embodiment, an outer sleeve is provided between the spring and the inner tube.

[0025] Optionally, the spring is a coil spring or a torsion spring.

[0026] At the same time, the present invention also provides a sunroof assembly, comprising:

[0027] Glass;

[0028] The reel assembly as described above, wherein the reel assembly is fixed to the glass;

[0029] Two guide rails are arranged at opposite ends of the reel assembly with a relative spacing, and the two guide rails are fixed to the glass; the guide rails include a first end close to the reel assembly and a second end away from the reel assembly;

[0030] Two second pulleys are respectively provided at the second ends of the two guide rails; a synchronous belt is connected between the first pulley and the second pulley on the corresponding side;

[0031] a pull rod, spaced relative to the reel assembly, and slidably mounted between the two guide rails;

[0032] a curtain, one end of the curtain being fixed to the inner tube, the other end of the curtain being fixed to the pull rod, and two side edges of the curtain being respectively arranged in the guide rails on corresponding sides; and

[0033] A driving mechanism is connected to at least one of the first pulleys and / or at least one of the second pulleys.

[0034] Furthermore, two sliders are provided at both ends of the pull rod, and the sliders include a mounting portion, a sliding portion and a fixed portion connected in sequence. The mounting portion is fixed to the pull rod, the sliding portion is slidably installed in the guide rail on the corresponding side, and the fixed portion is fixed to the synchronous belt.

[0035] In one embodiment, the sunroof assembly further includes a supporting wheel and a guide member disposed at a first end of the guide rail, the guide member is provided with a first groove, and the supporting wheel is fixed in the first groove for supporting the synchronous belt.

[0036] Furthermore, the guide rail includes a connected guide groove and a sliding groove for slidingly cooperating with the sliding part; the guide member is provided with a first limiting member matching the shape of the guide groove, and the first limiting member is embedded in the guide groove.

[0037] In one embodiment, the sunroof assembly further includes a connecting member disposed at the second end of the guide rail, the connecting member is provided with a second groove, and the second pulley is fixed in the second groove.

[0038] Furthermore, the connecting member is provided with a second limiting member that matches the shape of the guide groove, and the second limiting member is embedded in the guide groove.

[0039] In one embodiment, the first pulley and the second pulley are both gears, the inner surface of the synchronous belt is provided with a plurality of convex teeth matching the gears, and the gears are meshed with the convex teeth.

[0040] Furthermore, the fixing portion of the slider is provided with a recess matching the convex tooth, and the convex tooth is engaged with the recess.

[0041] In one embodiment, an injection molding block is provided on the synchronous belt, and the fixing portion is engaged with the injection molding block.

[0042] In one embodiment, the sunroof assembly further includes a front crossbeam and a rear crossbeam, both ends of the front crossbeam are fixed to the second ends of the two guide rails, both ends of the rear crossbeam are fixed to the first ends of the two guide rails, and the rear crossbeam is used to support the curtain.

[0043] Optionally, the synchronous belt is an open belt or a closed-loop belt.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] (1) A single-spring reel assembly is used. The axial tension generated by the spring in a stretched state causes the two first pulleys to be pushed outward in their axial directions to the two reel supports by the connecting rod and the spring fixing seat, respectively. This avoids the inner tube and the first pulley from axially moving when rotating, thereby improving the position accuracy of the first pulley, reducing the dimensional processing accuracy of the inner tube, and increasing the service life of the reel assembly. At the same time, the reeling force generated by the pre-rotation of the spring can tighten the curtain, ensuring that the curtain is always in a taut state during the opening or closing process, avoiding sagging and wrinkles. In addition, a spring is used to apply reeling force to the two first pulleys at the same time, and the two first pulleys are rigidly connected to the connecting rod in the rotation direction of the connecting rod, thereby ensuring the consistency of the curtain movement and solving 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 is stuck in the guide rail and cannot continue to run.

[0046] (2) The drive mechanism can be freely arranged at the front or rear end, which allows for more freedom in space layout during vehicle design;

[0047] (3) Using a synchronous pulley instead of a wire pulley can save about 20mm of space in the vehicle width direction for the sunroof assembly;

[0048] (4) Synchronous belt drive can reduce the noise during curtain operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is a schematic structural diagram of a reel assembly in the prior art;

[0050] FIG2 is a schematic structural diagram of a reel assembly according to an embodiment of the present invention;

[0051] FIG3 is a partial enlarged view of point A in FIG2 ;

[0052] FIG4 is a schematic structural diagram of a sunroof assembly according to an embodiment of the present invention;

[0053] FIG5 is an exploded view of FIG4 ;

[0054] FIG6 is a partial enlarged view of point B in FIG5 ;

[0055] FIG7 is a cross-sectional view of FIG4 AA;

[0056] FIG8 is a partial enlarged view of point C in FIG5 ;

[0057] FIG9 is an enlarged schematic diagram of the connection between the slider and the open belt in one embodiment of the present invention;

[0058] FIG10 is an enlarged schematic diagram of the connection between the slider and the open belt in another embodiment of the present invention;

[0059] FIG11 is an enlarged schematic diagram of the connection between the slider and the closed-loop belt in one embodiment of the present invention;

[0060] FIG12 is an enlarged schematic diagram of the connection between the slider and the closed-loop belt in another embodiment of the present invention.

[0061] Description of labels:

[0062] 10. Reel assembly; 11. Inner tube; 12. Connecting rod; 13. First pulley; 14. Spring; 141. Spring fixing seat; 142. Spring fixing shaft; 15. Reel support; 16. Fixed shaft sleeve; 17. Inner sleeve; 18. Outer sleeve;

[0063] 20. Sunroof assembly; 21. Glass; 22. Guide rail; 221. Guide groove; 222. Slide groove; 223. First end; 224. Second end; 23. Second pulley; 24. Timing belt; 241. Protruding tooth; 242. Injection block; 25. Tie rod; 26. Slider; 261. Mounting portion; 262. Sliding portion; 263. Fixing portion; 264. Recessed portion; 27. Curtain; 28. Drive mechanism; 29. ​​Guide member; 291. First groove; 292. First stopper; 30. Support wheel; 31. Front crossbeam; 32. Rear crossbeam; 33. Connector; 331. Second groove; 332. Second stopper.

[0064] a. Fixed shaft; b. Wheel. DETAILED DESCRIPTION

[0065] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0066] As shown in FIG2-3 , in some embodiments of the present application, a reel assembly 10 is provided, comprising:

[0067] Inner tube 11;

[0068] a connecting rod 12 rotatably embedded in and passing through the inner tube 11;

[0069] Two first pulleys 13 are respectively provided at both ends of the connecting rod 12 and located outside the inner tube 11; the two first pulleys 13 are fixedly connected to the connecting rod 12 in the rotation direction of the connecting rod 12, and the two first pulleys 13 are movably connected to the connecting rod 12 in the axial direction of the connecting rod 12;

[0070] a spring fixing seat 141 disposed between the inner tube 11 and the connecting rod 12 and fixed to one end of the inner tube 11 , wherein the spring fixing seat 141 is movably connected to the connecting rod 12 in the axial direction of the connecting rod 12 ;

[0071] a spring fixing shaft 142 , fixed to the connecting rod 12 and located inside the inner tube 11 ;

[0072] a spring 14 wound on the connecting rod 12 , one end of the spring 14 being fixed to the spring fixing seat 141 , and the other end of the spring 14 being fixed to the spring fixing shaft 142 ; and

[0073] Two reel supports 15 are respectively provided at both ends of the connecting rod 12 and located on the outside of the first pulley 13; the spring 14 has axial tension so that the two first pulleys 13 are pushed outward in the axial direction of the connecting rod 12 to the two reel supports 15.

[0074] During installation, the spring 14 is wound on the connecting rod 12, one end of the spring 14 is fixed to the spring fixing seat 141, and the other end of the spring 14 is fixed to the spring fixing shaft 142; the connecting rod 12 carries the spring 14 through the inner tube 11, and the spring fixing seat 141 is fixed to one end of the inner tube 11; the connecting rod 12 is pushed, and the other end of the connecting rod 12 passes through the other end of the inner tube 11, so that the spring 14 is in a stretched state, and the spring 14 generates axial tension. Due to the two first pulleys 13 and the The connecting rod 12 is movably connected in the axial direction of the connecting rod 12 and the spring fixing seat 141 is movably connected to the connecting rod 12 in the axial direction of the connecting rod 12. The axial tension pushes the first pulley 13 arranged on both sides of the connecting rod 12 outward to the reel support 15 through the connecting rod 12 and the spring fixing seat 141 respectively, thereby avoiding axial movement of the inner tube 11 and the first pulley 13 when rotating, improving the position accuracy of the first pulley 13, reducing the dimensional processing accuracy of the inner tube 11, and increasing the service life of the reel assembly 10.

[0075] In this embodiment, the spring 14 is optionally a coil spring or a torsion spring. It should be noted that the spring 14 is pre-spun before being installed in the reel assembly 10. The retraction force generated by the pre-spinning spring 14 can tighten the curtain 27, ensuring that the curtain 27 is always tightened during the opening or closing process, preventing it from sagging and wrinkling.

[0076] A winding force is applied to the two first pulleys 13 at the same time through a spring 14. Since the two first pulleys 13 are fixedly connected to the connecting rod 12 in the rotation direction of the connecting rod 12, and the winding force is provided by only one spring 14, the winding force applied to the two first pulleys 13 is always the same, ensuring the movement consistency of the curtain 27.

[0077] In this embodiment, further, the inner tube 11, the connecting rod 12, the first pulley 13 and the spring 14 are coaxially arranged to ensure the operating stability of the reel assembly 10 and avoid noise.

[0078] In this embodiment, as shown in FIG2 , the reel assembly 10 further includes a fixed sleeve 16 disposed between the inner tube 11 and the connecting rod 12 and fixed to the other end of the inner tube 11. The connecting rod 12 is rotatably mounted within the fixed sleeve 16. The provision of the fixed sleeve 16 prevents the connecting rod 12 from shifting within the inner tube 11, thereby preventing the axes of the two first pulleys 13 from offsetting, thereby preventing the curtain 27 from jamming during movement.

[0079] In one embodiment, as shown in FIG3 , an inner sleeve 17 is provided between the connecting rod 12 and the spring 14 . The provision of the inner sleeve 17 can avoid abnormal noise caused by friction between the spring 14 and the connecting rod 12 .

[0080] In one embodiment, as shown in FIG3 , an outer sleeve 18 is provided between the spring 14 and the inner tube 11 . The provision of the outer sleeve 18 can avoid abnormal noise caused by friction between the spring 14 and the inner tube 11 .

[0081] At the same time, as shown in FIG4 , the present application, in some embodiments, further provides a sunroof assembly 20 , including:

[0082] Glass 21;

[0083] The reel assembly 10 as described above is fixed to the glass 21;

[0084] Two guide rails 22 are arranged at opposite ends of the reel assembly 10 at a relative interval, and the two guide rails 22 are fixed to the glass 21; the guide rail 22 includes a first end 223 close to the reel assembly 10 and a second end 224 away from the reel assembly 10;

[0085] Two second pulleys 23 are respectively provided at the second ends 224 of the two guide rails 22; a synchronous belt 24 is connected between the first pulley 13 and the second pulley 23 on the corresponding side;

[0086] A pull rod 25 is spaced apart from the reel assembly 10 and is slidably mounted between the two guide rails 22;

[0087] a curtain 27, one end of the curtain 27 being fixed to the inner tube 11, the other end of the curtain 27 being fixed to the pull rod 25, and two side edges of the curtain 27 being respectively disposed in the guide rails 22 on corresponding sides; and

[0088] The driving mechanism 28 is connected to at least one of the first pulleys 13 and / or at least one of the second pulleys 23 .

[0089] The retraction force generated by the pre-rotation of the spring 14 can tighten the curtain 27 wound on the reel assembly 10, ensuring that the curtain 27 is always in a taut state during the opening or closing process, avoiding sagging and preventing wrinkles.

[0090] At the same time, using the first pulley 13 instead of the wire pulley in the prior art can save about 20 mm of space for the sunroof assembly 20 in the vehicle width direction; and the synchronous belt 24 transmission can reduce the noise when the curtain 27 is running.

[0091] It should be noted that in this embodiment, the glass 21 is not limited to a material and is typically inorganic glass, organic glass, or a composite material. The guide rail 22 is not limited to a material and is typically plastic or metal. The curtain 27 is not limited to a material and can be cloth, plastic, etc. The curtain 27 can be used for sunshade or projection.

[0092] In this embodiment, further, two sliders 26 are respectively provided at both ends of the pull rod 25, and the slider 26 includes a mounting portion 261, a sliding portion 262 and a fixed portion 263 connected in sequence. The mounting portion 261 is fixed to the pull rod 25, the sliding portion 262 is slidably installed in the guide rail 22 on the corresponding side, and the fixed portion 263 is fixed to the synchronous belt 24.

[0093] It should be noted that the driving mechanism 28 is used to drive at least one of the first pulleys 13 and / or at least one of the second pulleys 23 to rotate, and the driving mechanism 28 can be freely selected to be arranged at the front end or the rear end of the sunroof assembly 20, which makes the space layout more free when designing the whole vehicle; when the driving mechanism 28 is connected to one of the first pulleys 13 (that is, when the driving mechanism 28 is arranged at the rear end of the sunroof assembly 20), the driving mechanism 28 drives one of the first pulleys 13 to rotate to drive the synchronous belt 24 on the same side, and the first pulley 13 drives the second pulley 23 on the same side to rotate through the synchronous belt 24. At the same time, since a winding force is applied to the two first pulleys 13 at the same time in the reel assembly 10 through one spring 14, the two first pulleys 13 are fixedly connected to the connecting rod 12 in the rotation direction of the connecting rod 12, and the winding force is provided by only one spring 14, so the winding force of the two first pulleys 13 is always the same. Therefore, the drive mechanism 28 drives one of the first pulleys 13 to rotate, which in turn drives the other first pulley 13 to rotate synchronously, thereby transmitting the power to the timing belt 24. Simultaneously, the slider 26 fixed to the timing belt 24 drives the pull rod 25 to move, thereby opening or closing the curtain 27. This ensures the consistent movement of the curtain 27 and solves the problem of uneven movement of the two sides of the curtain 27 and tilting of the pull rod 25 when the pull rod 25 is subjected to uneven force, which can cause the curtain 27 to become stuck in the guide rail 22 and unable to continue to move.

[0094] When the drive mechanism 28 is connected to one of the second pulleys 23 (i.e., when the drive mechanism 28 is arranged at the front end of the sunroof assembly 20), the drive mechanism 28 drives one of the second pulleys 23 to rotate, and the second pulley 23 drives the synchronous belt 24 on the same side to rotate. The synchronous belt 24 drives the first pulley 13 on the same side and the slider 26 fixed to the synchronous belt 24 to move. The first pulley 13 on the same side drives the first pulley 13 on the other side to rotate, thereby driving the synchronous belt 24 on the other side to move. The synchronous belt 24 on the other side then drives the second pulley 23 on the other side and the slider 26 on the other side fixed to the synchronous belt 24 on the other side to move. The sliders 26 on both sides drive the pull rod 25 to move, thereby realizing the opening and closing of the curtain 27. This ensures the consistency of the movement of the curtain 27 and solves the problem that when the pull rod 25 is unevenly stressed, the two sides of the curtain 27 move inconsistently, the pull rod 25 tilts, and the curtain 27 is stuck in the guide rail 22 and cannot continue to move.

[0095] In addition, the driving mechanism 28 may also be connected to the two first pulleys 13 and / or the two second pulleys 23 .

[0096] In this embodiment, optionally, the synchronous belt 24 is an open belt or a closed-loop belt.

[0097] It should be noted that the open belt is a straight belt with its ends not bonded together. After the open belt is wrapped around the first pulley 13 and the second pulley 23, the two ends of the open belt are fixed by the fixing portion 263 of the slider 26. The open belt can then be moved by the drive mechanism 28, causing the ends of the open belt to move linearly. When in use, the belt length can be freely set within a certain range to achieve a long span, thus having greater adaptability, and also has the advantages of small production tolerances and reliable transmission. The open belt cooperates with the first pulley 13 and the second pulley 23 to accurately transmit reciprocating motion without slipping. The closed-loop belt is an endless belt formed by bonding the two ends of the open belt together.

[0098] In one embodiment, as shown in Figures 4-7, the sunroof assembly 20 also includes a support wheel 30 and a guide member 29 arranged at the first end 223 of the guide rail 22, the guide member 29 is provided with a first groove 291, and the support wheel 30 is fixed to the first groove 291 for supporting the synchronous belt 24.

[0099] It should be noted that the support wheel 30 is used to support the synchronous belt 24 to prevent the synchronous belt 24 from sagging and causing transmission failure. The synchronous belt 24 connects the first pulley 13, the second pulley 23, and the slider 26 on the same side in series to form a closed loop. The synchronous belt 24 is tensioned by the support wheel 30 and driven by the drive mechanism 28. The power is transmitted to the other side through the reel assembly 10, achieving synchronous movement of the reels and pull rods 25 on both sides, and realizing the opening and closing of the curtain 27.

[0100] In this embodiment, further, the guide rail 22 includes a connected guide groove 221 and a sliding groove 222 for slidingly cooperating with the sliding portion 262; the guide member 29 is provided with a first limiting member 292 matching the shape of the guide groove 221, and the first limiting member 292 is embedded in the guide groove 221.

[0101] It should be noted that the setting of the first limiting member 292 can provide guidance for the sliding portion 262 of the slider 26 to be installed into the guide rail 22; and after the slider 26 is installed into the guide rail 22, the guide groove 221 cooperates with the first limiting member 292 to prevent the slider 26 from sliding out of the first end 223 of the guide rail 22.

[0102] In one embodiment, as shown in Figures 4, 5, and 8, the sunroof assembly 20 further includes a connector 33 disposed at the second end 224 of the guide rail 22, the connector 33 being provided with a second groove 331, and the second pulley 23 being fixed to the second groove 331. The second groove 331 provides support for the second pulley 23 and can prevent the second pulley 23 from being exposed to the passenger's field of vision. In this embodiment, further, the connector 33 is provided with a second limiting member 332 that matches the shape of the guide groove 221, and the second limiting member 332 is embedded in the guide groove 221. The guide groove 221 cooperates with the second limiting member 332 to prevent the slider 26 from sliding out of the second end 224 of the guide rail 22.

[0103] In one embodiment, the first pulley 13 and the second pulley 23 are both gears, and the inner surface of the synchronous belt 24 is provided with a plurality of protruding teeth 241 that match the gears, and the gears mesh with the protruding teeth 241. The meshing of the gears with the protruding teeth 241 realizes the connection between the synchronous belt 24 and the first pulley 13 and the second pulley 23 on the same side.

[0104] In this embodiment, further, as shown in FIG. 9 and FIG. 11 , the fixing portion 263 of the slider 26 is provided with a recess 264 matching the convex tooth 241 , and the convex tooth 241 is engaged with the recess 264 .

[0105] Alternatively, as shown in FIG. 10 and FIG. 12 , in one embodiment, an injection block 242 is provided on the synchronous belt 24 , and the fixing portion 263 is engaged with the injection block 242 .

[0106] In one embodiment, as shown in Figure 5, the sunroof assembly 20 also includes a front crossbeam 31 and a rear crossbeam 32, the two ends of the front crossbeam 31 are fixed to the second ends 224 of the two guide rails 22, and the two ends of the rear crossbeam 32 are fixed to the first ends 223 of the two guide rails 22, and the rear crossbeam 32 is used to support the curtain 27.

[0107] It should be noted that in the present invention, if the glass 21 is an inorganic glass, examples thereof include soda-lime glass (also known as soda-lime silicate glass), aluminosilicate glass, borate glass, borosilicate glass, lithium aluminosilicate glass, alkali-free glass, and quartz glass. Soda-lime glass is particularly preferred among these. To improve strength, the inorganic glass may also be tempered glass, which may be either chemically tempered glass or physically tempered glass.

[0108] If the glass 21 is an organic glass (resin), examples thereof include polycarbonate resins, polystyrene resins, aromatic polyester resins, acrylic resins, polyester resins, polyarylate resins, polycondensates of halogenated bisphenol A and ethylene glycol, acrylic urethane resins, and acrylic resins containing halogenated aromatic groups. Among these, polycarbonate resins such as aromatic polycarbonate resins and acrylic resins such as polymethyl methacrylate acrylic resins are preferred, polycarbonate resins are more preferred, and bisphenol A polycarbonate resins are particularly preferred. Furthermore, two or more of the above resins may be used in combination.

[0109] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0110] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

[0111] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0112] In the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections (e.g., connections using bolts or screws), or integration (e.g., riveting or welding); mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise expressly specified or limited. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0113] In addition, unless otherwise stated, the terms used in any technical solution disclosed in the present invention to express positional relationships or shapes include states or shapes that are approximate, similar, or close thereto.

[0114] Any component provided by the present invention may be assembled from multiple separate components, or may be a separate component manufactured by an integral molding process.

[0115] In the present invention, unless otherwise expressly specified or limited, a first feature "above" or "below" a second feature may be such that the first and second features are in direct contact, or such that the first and second features are in indirect contact through an intermediate medium. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

Claims

1. A reel assembly, characterized in that: include: Inner tube; A connecting rod, rotatably embedded in and passing through the inner tube; Two first pulleys are respectively arranged at two ends of the connecting rod and located outside the inner tube; the two first pulleys are fixedly connected to the connecting rod in the rotation direction of the connecting rod, and the two first pulleys are movably connected to the connecting rod in the axial direction of the connecting rod; a spring fixing seat, disposed between the inner tube and the connecting rod and fixed to one end of the inner tube, the spring fixing seat being movably connected to the connecting rod in the axial direction of the connecting rod; A spring fixed shaft, fixed to the connecting rod and located inside the inner tube; A spring, wound on the connecting rod, one end of the spring is fixed to the spring fixing seat, and the other end of the spring is fixed to the spring fixing shaft; as well as Two reel supports are respectively arranged at two ends of the connecting rod and located outside the first belt pulley; the spring has axial tension so that the two first belt pulleys are pushed outwards to the two reel supports in the axial direction of the connecting rod.

2. The reel assembly according to claim 1, characterized in that: The inner tube, the connecting rod, the first pulley and the spring are coaxially arranged.

3. The reel assembly according to claim 1, characterized in that: The reel assembly also includes a fixed sleeve, which is arranged between the inner tube and the connecting rod and fixed to the other end of the inner tube; the connecting rod is rotatably installed in the fixed sleeve.

4. The reel assembly according to claim 1, characterized in that: An inner sleeve is provided between the connecting rod and the spring.

5. The reel assembly according to claim 1, characterized in that: An outer sleeve is provided between the spring and the inner tube.

6. The reel assembly according to claim 1, characterized in that: The spring is a coil spring or a torsion spring.

7. A sunroof assembly, characterized in that: include: Glass; The reel assembly according to any one of claims 1 to 6, wherein the reel assembly is fixed to the glass; Two guide rails are arranged at opposite ends of the reel assembly at a relative interval, and the two guide rails are fixed to the glass; the guide rail includes a first end close to the reel assembly and a second end away from the reel assembly; Two second pulleys are respectively arranged at the second ends of the two guide rails; a synchronous belt is connected between the first pulley and the second pulley on the corresponding side; A pull rod is arranged relative to the reel assembly and spaced apart from the reel assembly, and the pull rod is slidably installed between the two guide rails; A curtain cloth, one end of which is fixed to the inner tube, the other end of which is fixed to the pull rod, and two side edges of which are respectively arranged in the guide rails on corresponding sides; as well as A driving mechanism is connected to at least one of the first pulleys and / or at least one of the second pulleys.

8. The sunroof assembly according to claim 7, characterized in that: Two sliders are respectively provided at both ends of the pull rod, and the sliders include a mounting portion, a sliding portion and a fixed portion which are connected in sequence. The mounting portion is fixed to the pull rod, the sliding portion is slidably mounted in the guide rail on the corresponding side, and the fixed portion is fixed to the synchronous belt.

9. The sunroof assembly according to claim 8, characterized in that: The sunroof assembly also includes a supporting wheel and a guide member arranged at the first end of the guide rail, the guide member is provided with a first groove, and the supporting wheel is fixed to the first groove for supporting the synchronous belt.

10. The sunroof assembly according to claim 9, characterized in that: The guide rail comprises a connected guide groove and a slide groove for slidingly cooperating with the sliding part; the guide member is provided with a first limit member matching the shape of the guide groove, and the first limit member is embedded in the guide groove.

11. The sunroof assembly according to claim 10, characterized in that: The sunroof assembly further includes a connecting member disposed at the second end of the guide rail, the connecting member is provided with a second groove, and the second pulley is fixed to the second groove.

12. The sunroof assembly according to claim 11, characterized in that: The connecting member is provided with a second limiting member that matches the shape of the guiding groove, and the second limiting member is embedded in the guiding groove.

13. The sunroof assembly according to claim 7, characterized in that: The first pulley and the second pulley are both gears, and the inner surface of the synchronous belt is provided with a plurality of convex teeth matching the gears, and the gears are meshed with the convex teeth.

14. The sunroof assembly according to claim 13, characterized in that: The fixing portion of the sliding block is provided with a recessed portion matching the convex tooth, and the convex tooth is engaged with the recessed portion.

15. The sunroof assembly according to claim 8, characterized in that: An injection block is arranged on the synchronous belt, and the fixing part is clamped with the injection block.

16. The sunroof assembly according to claim 7, characterized in that: The sunroof assembly also includes a front crossbeam and a rear crossbeam, the two ends of the front crossbeam are fixed to the second ends of the two guide rails, the two ends of the rear crossbeam are fixed to the first ends of the two guide rails, and the rear crossbeam is used to support the curtain.

17. The sunroof assembly according to claim 7, characterized in that: The synchronous belt is an open belt or a closed loop belt.

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