Reel assembly for vehicle sunshade curtain device and vehicle sunshade curtain device

Abstract

The utility model discloses a reel assembly for a vehicle sunshade curtain device and the vehicle sunshade curtain device. The reel assembly comprises a reel body and two rope wheels. The reel body comprises a sleeve, and a connecting groove is formed in the circumferential inner surface of the sleeve. The core shaft extends to penetrate through the sleeve and is suitable for rotating relative to the sleeve, and the two rope wheels are installed at the two ends of the core shaft respectively; the torsional spring support is located in the sleeve, and a first connecting protrusion is arranged on the torsional spring support; the first connecting bulge is suitable for being detachably jointed with the connecting groove; the first end of the torsion spring is detachably connected with the torsion spring support, and the second end of the torsion spring is detachably connected with the mandrel and / or the corresponding rope wheel. According to the reel assembly, the torsional spring support and the sleeve are detachably connected together through the first connecting protrusion and the connecting groove. The reel assembly can be assembled and disassembled for multiple times, and the assembling process and the disassembling process are easy, so that the sunshade curtain device is convenient to maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle technology, and in particular to a roller assembly for a vehicle sunshade. The present application also relates to a vehicle sunshade device comprising such a roller assembly. BACKGROUND

[0002] Some vehicles are equipped with a sunroof, even a panoramic sunroof, on the roof of the vehicle to increase the light into the vehicle and to help improve the view of the vehicle occupants. However, in a strong sunlight environment, the sunroof needs to be shaded to reduce the light into the vehicle.

[0003] In some vehicles, a sunshade device is installed on the roof of the vehicle. For example, the sunshade device comprises a curtain and a roller assembly. The roller assembly comprises a sleeve, a mandrel, a torsion spring and a torsion spring bracket. The mandrel is arranged in the sleeve, and the sleeve and the mandrel are relatively rotatable, and the curtain is connected with the sleeve. The torsion spring bracket is also arranged in the sleeve, and the torsion spring bracket is riveted together with the sleeve and is spaced apart from the mandrel, so that the torsion spring bracket and the mandrel are also relatively rotatable. The torsion spring is also arranged in the sleeve, and one end of the torsion spring is connected with the torsion spring bracket, and the other end is connected with the mandrel. However, when the sunshade device is maintained, it is difficult to disassemble the sleeve, the mandrel, the torsion spring and the torsion spring bracket, which leads to the inconvenience of maintaining the sunshade device. SUMMARY

[0004] In view of the above technical problems, the first aspect of the present application provides a roller assembly for a vehicle sunshade device. The roller assembly comprises a roller body and two rope wheels, the roller body comprises a sleeve, a circumferential inner surface of the sleeve is provided with a connecting groove extending in an axial direction of the sleeve; a mandrel extending through the sleeve and adapted to rotate relative to the sleeve; two rope wheels respectively mounted on both ends of the mandrel and adapted to rotate synchronously with the mandrel; a torsion spring bracket in the interior of the sleeve; the torsion spring bracket is provided with a first connecting protrusion; the first connecting protrusion is adapted to detachably engage with the connecting groove, so that the torsion spring bracket is adapted to be driven by the sleeve to move synchronously; and a torsion spring in the interior of the sleeve; a first end of the torsion spring is adapted to detachably connect with the torsion spring bracket, and a second end is adapted to detachably connect with the mandrel and / or the corresponding rope wheel.

[0005] In one embodiment, a plurality of connecting grooves are provided on the circumferential inner surface of the sleeve, and the plurality of connecting grooves are spaced apart in the circumferential direction of the sleeve; the torsion spring bracket is annular, and a plurality of first connecting protrusions are provided on the circumferential outer surface of the torsion spring bracket; the plurality of first connecting protrusions are respectively adapted to detachably engage with the plurality of connecting grooves.

[0006] In one embodiment, the torsion spring bracket is provided with a central hole, so that the torsion spring bracket is adapted to be rotatably sleeved on the mandrel.

[0007] In one embodiment, the shaft sleeve is provided with a shaft shoulder, and the torsion spring support is adapted to abut against the shaft shoulder.

[0008] In one embodiment, the shaft sleeve is fixedly provided with a retaining sleeve, the retaining sleeve is provided with a first limiting portion protruding from a circumferential outer surface of the retaining sleeve; the torsion spring support is adapted to be rotatably sleeved on the retaining sleeve and abut against the first limiting portion, and the torsion spring is located on a side of the first limiting portion away from the torsion spring support.

[0009] In one embodiment, the torsion spring support is provided with a first connecting hole; the first end of the torsion spring is provided with a first pull hook, and the first pull hook is detachably connected into the first connecting hole.

[0010] In one embodiment, the shaft sleeve is fixedly provided with a retaining sleeve, the retaining sleeve is provided with a first limiting portion protruding from a circumferential outer surface of the retaining sleeve; the torsion spring support is adapted to be rotatably sleeved on the retaining sleeve and abut against the first limiting portion, and the torsion spring is located on a side of the first limiting portion away from the torsion spring support.

[0011] In one embodiment, the circumferential outer surface of each first segment is provided with a second connecting protrusion; the second connecting protrusion is adapted to detachably engage with the connecting groove of the sleeve pipe, so that the sleeve pipe is adapted to drive the two support sleeves to synchronously rotate.

[0012] In one embodiment, the circumferential inner surface of the sleeve pipe is provided with a plurality of connecting grooves, and the plurality of connecting grooves are spaced apart along the circumferential direction of the sleeve pipe; the circumferential outer surface of each first segment is provided with a plurality of second connecting protrusions; the plurality of second connecting protrusions are respectively adapted to detachably engage with the plurality of connecting grooves.

[0013] In one embodiment, the second end of the torsion spring is configured with a second pull hook; the second pull hook is detachably connected with the rope wheel corresponding to the second end of the torsion spring.

[0014] A second aspect of the present application provides a vehicle sunshade curtain device. The vehicle sunshade curtain device comprises the reel assembly for the vehicle sunshade curtain device according to the above description; a curtain cloth comprising oppositely arranged first and second transverse edges, the second transverse edge being connected with the sleeve pipe, and the first transverse edge being adapted to be driven to move the curtain cloth; and a pull rope connected with the curtain cloth; two ends of the pull rope are respectively connected with the two rope wheels; wherein, when the curtain cloth is released from the reel body and unfolded, the sleeve pipe and the torsion spring support rotate and twist the torsion spring, the shaft sleeve and the rope wheels are driven to rotate by the torsion spring to wind up the pull rope; and when the curtain cloth is wound onto the reel body, the pull rope is released from the rope wheels, the rope wheels and the shaft sleeve rotate and twist the torsion spring, and the sleeve pipe and the torsion spring support are driven to rotate by the torsion spring to wind up the curtain cloth.

[0015] In one embodiment, the torsion spring is configured to remain twisted when the fabric is fully extended or fully retracted.

[0016] The application has the following advantages: in the reel assembly for a vehicle sunshade device of the application, the torsion spring bracket and the sleeve are detachably engaged together through the first connecting protrusion and the connecting groove. The reel assembly can be assembled and disassembled for multiple times, and the assembly and disassembly processes are relatively easy, which makes the maintenance of the sunshade device including such a reel assembly more convenient. In addition, during the assembly of the reel assembly, there is no riveting operation between the sleeve and the torsion spring bracket, which helps to avoid the deformation of the torsion spring bracket or the connection with the mandrel, so that the torsion spring bracket and the sleeve cannot rotate relative to the mandrel, and further causes the damage of the vehicle sunshade device including such a reel assembly. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be further described in the following detailed description with the aid of non-limiting examples of exemplary embodiments of the application, with reference made to the accompanying drawings. The drawings are not drawn to scale.

[0018] Figure 1 A vehicle according to one embodiment of the application is schematically shown.

[0019] Figure 2 A vehicle sunshade device according to one embodiment of the application is schematically shown.

[0020] Figure 3 A schematic view of a vehicle sunshade device is schematically shown.

[0021] Figure 4 A reel assembly for a vehicle sunshade device according to one embodiment of the application is schematically shown.

[0022] Figure 5 A cross-sectional view of the reel assembly is schematically shown.

[0023] Figure 6 A sleeve is schematically shown.

[0024] Figure 7 A mandrel and a retaining sleeve mounted on the mandrel are schematically shown.

[0025] Figure 8 A torsion spring bracket is schematically shown.

[0026] Figure 9 An assembled state of a torsion spring, a torsion spring bracket, a mandrel and a retaining sleeve is schematically shown.

[0027] Figure 10 A support sleeve is schematically shown.

[0028] Figure 11 A rope wheel is schematically shown.

[0029] Figure 12 An assembled state of the support sleeve, rope wheel and mandrel is schematically shown.

[0030] Figure 13 An assembled state of the torsion spring, support sleeve, rope wheel and mandrel is schematically shown.

[0031] List of reference signs

[0032] 1 vehicle

[0033] 11 sunroof opening 12 vehicle roof

[0034] 2 vehicle sunshade device

[0035] 22a first pulley 22b second pulley

[0036] 23 shade cloth

[0037] 231a first longitudinal edge 231b second longitudinal edge

[0038] 232 first lateral edge 233 handle plate

[0039] 25 pull cord

[0040] 252a first pull section 252b second pull section

[0041] 252c connecting section

[0042] 26a first guide rail 26b second guide rail

[0043] 3 reel assembly for a vehicle sunshade device

[0044] 30 reel body

[0045] 31 sleeve

[0046] 311 connecting groove 312 engaging tooth

[0047] 32 mandrel 321 rotation-stopping opening

[0048] 33 torsion spring holder

[0049] 331 first connecting protrusion 332 first connecting hole

[0050] 333 tooth groove 334 receiving groove

[0051] 34 torsion spring

[0052] 341 first end of the torsion spring 341a first pull hook

[0053] 342 second end of torsion spring 342a second pull hook

[0054] 343 main body portion of torsion spring

[0055] 36a first rope wheel 36b second rope wheel

[0056] 361 mounting portion 362 second connecting hole

[0057] 363 rope winding portion 364 shaft hole

[0058] 37 retaining sleeve

[0059] 371 first mounting section 372 second mounting section

[0060] 373 first limiting portion

[0061] 38a first support sleeve 38b second support sleeve

[0062] 381 first section 382 second section

[0063] 383 second limiting portion 384 second connecting protrusion

[0064] D1 first direction D2 second direction

[0065] L axial direction of sleeve DETAILED DESCRIPTION

[0066] The purposes, technical solutions, and advantages of the present application will be made clearer in the following detailed description of the embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0067] Figure 1 A vehicle 1 according to an embodiment of the present application is schematically shown. As shown, the vehicle 1 comprises a vehicle roof 12. A sunroof opening 11 is provided on the vehicle roof 12, and a sunroof glass (not shown in the figure) is installed at the sunroof opening 11. In order to shield the sunroof glass when needed, a vehicle sunshade curtain device 2 (hereinafter, simply referred to as the sunshade curtain device 2) is also installed at the sunroof opening 11. In some vehicles, the vehicle roof can also be made of glass (i.e., the vehicle roof is a glass canopy). In this case, the sunshade curtain device 2 is installed on the glass canopy. Figure 1

[0068] The sunshade curtain device 2 will be described below.

[0069] Referring to Figure 2 and​Figure 3 The sunshade curtain device 2 mainly comprises a curtain fabric 23, a roller assembly 3 (hereinafter, referred to as the roller assembly 3) for a vehicle sunshade curtain device, and a pull rope 25. In addition, the sunshade curtain device 1 further comprises two guide rails (i.e., a first guide rail 26a and a second guide rail 26b).

[0070] The curtain fabric 23 is generally rectangular and has two longitudinal edges (i.e., a first longitudinal edge 231a and a second longitudinal edge 231b) extending along a first direction D1 and a first lateral edge 232 and a second lateral edge (not shown in the figure) extending along a second direction D2 which is generally perpendicular to the first direction D1. The first lateral edge 232 and the second lateral edge are opposite along the first direction D1. A pull handle plate 233 in a strip shape is arranged along the first lateral edge 232, and a user can manually drive the curtain fabric 23 to reciprocate along the first direction D1 through the pull handle plate 233 (which will be described in detail below). In an embodiment, a pull rod (not shown in the figure) can also be arranged at the first lateral edge 232 of the curtain fabric. The pull rod is used to support the curtain fabric. The pull handle plate can be a separate component and is mounted on the curtain fabric or assembled with the pull rod. It should be understood that the first lateral edge (or the pull handle plate) of the curtain fabric can also be driven to move the curtain fabric by other means (for example, by a motor).

[0071] The first guide rail 26a and the second guide rail 26b both extend along the first direction D1 and are located at two sides of the curtain fabric 23 along the second direction D2 (for example, the first guide rail 26a is arranged adjacent to the first longitudinal edge 231a, and the second guide rail 26b is arranged adjacent to the second longitudinal edge 231b). The curtain fabric 23 can reciprocate along the first direction D1 under the guidance of the two guide rails.

[0072] The roller assembly 3 comprises a roller body 30 and two rope wheels (i.e., a first rope wheel 36a and a second rope wheel 36b) mounted at two ends of the roller body 30. The roller body 30 generally extends along the second direction D2 and is between the first guide rail 26a and the second guide rail 26b. The curtain fabric 23 is carried on the roller assembly 3, for example, the second lateral edge of the curtain fabric 23 is connected with the roller body 30, and the first lateral edge 232 forms a free edge away from the roller body 30. When the roller body 30 rotates to roll up or release the curtain fabric 23, the two rope wheels rotate synchronously to release or roll up the pull rope 25 (which will be described in detail below).

[0073] The sunshade curtain device 2 further comprises two pulleys (i.e., a first pulley 22a and a second pulley 22b). The two pulleys are arranged at two sides of the curtain fabric 23 along the second direction D2, for example, the two pulleys are arranged on the two guide rails respectively.

[0074] The pull cord 25 includes two pull sections (i.e., a first pull section 252a and a second pull section 252b) and a connecting section 252c connected between the two pull sections. The first pull section 252a and the second pull section 252b extend along the first direction Dl and are on two sides of the curtain 23 along the second direction D2. The connecting section 252c is engaged with the handle plate 233 (or the pull rod). For example, the connecting section 252c extends generally along the second direction D2 (i.e., the length direction of the first lateral edge 232 of the curtain 23) across and is connected with the first lateral edge 232 of the curtain 23. The first pull section 252a extends from the first pulley 36a and is redirected via the first pulley 22a to be connected with one end of the connecting section 252c. The second pull section 252b extends from the second pulley 36b and is redirected via the second pulley 22b to be connected with the other end of the connecting section 252c.

[0075] When it is required to shade the sunroof glass, the user manually pulls the handle plate 233 to move away from the roller assembly 3 along the first direction Dl, the roller body 30 is positively rotated to release the curtain 23, while the first pulley 36a and the second pulley 36b are also positively rotated to wind up the pull cord 25. In this way, the curtain 23 is gradually unfolded and shades the sunroof glass. When it is required to expose the sunroof glass, the user manually pulls the handle plate 233 to move toward the roller assembly 3 along the first direction Dl, the roller body 30 is reversely rotated to wind up the curtain 23, while the first pulley 36a and the second pulley 36b are also reversely rotated to release the pull cord 25. In this way, the curtain 23 is gradually wound up on the roller assembly 3 to expose the sunroof glass. It should be understood that the curtain can also stop at any position which only shades a part of the sunroof glass. It should also be understood that the rotation direction of the roller body and the rotation direction of the pulleys (i.e., positive and reverse) can be defined according to actual conditions, which are not limited here.

[0076] According to actual conditions, two pull cords can also be used to pull the two ends of the first lateral edge of the curtain (or pull the two ends of the pull rod provided at the first lateral edge of the curtain) respectively, which will not be described in detail here.

[0077] The roller assembly 3 will be described below.

[0078] Referring to Figure 4 and Figure 5 The roller body 30 includes a sleeve 31, a mandrel 32, a torsion spring bracket 33 and a torsion spring 34.

[0079] The sleeve 31 extends generally along the second direction D2 (i.e., the axial direction L of the sleeve 31 is generally parallel to the second direction D2). The second lateral edge of the curtain 23 is connected with the sleeve 31 and is adapted to be wound up on or released from the sleeve 31. As Figure 6As shown, a plurality of connecting grooves 311 extending in the axial direction L of the sleeve 31 are provided on the circumferential inner surface of the sleeve 31.

[0080] The mandrel 32 extends through the sleeve 31 and is adapted to rotate relative to the sleeve 31. For example, the sleeve 31 and the mandrel 32 are spaced apart from each other radially (e.g., in the radial direction of the sleeve 31) so that the mandrel 32 and the sleeve 31 can rotate relative to each other. It should be understood that the first rope wheel 36a and the second rope wheel 36b are detachably mounted at two ends of the mandrel 32, respectively, and rotate synchronously with the mandrel 32.

[0081] The torsion spring holder 33 is disposed inside the sleeve 31. As shown, Figure 8 As shown, a plurality of first connecting protrusions 331 extending in the axial direction L of the sleeve 31 are provided on the torsion spring holder 33. The first connecting protrusions 331 are matched with the connecting grooves 311 so that the first connecting protrusions 331 and the connecting grooves 311 are detachably engaged. Also as shown, Figure 8 As shown, the torsion spring holder 33 is annular, and a plurality of first connecting protrusions 331 are provided on the circumferential outer surface of the torsion spring holder 33. These first connecting protrusions 331 are matched with those connecting grooves 311 on the sleeve 31. In this way, the torsion spring holder 33 and the sleeve 31 are detachably engaged in a generally spline-connected manner.

[0082] Referring to Figure 5 , Figure 9 and Figure 13 , the torsion spring 34 is also inside the sleeve 31. For example, the torsion spring 34 is generally cylindrical and is sleeved on the mandrel 32. A first end 341 of the torsion spring 34 is detachably connected with the torsion spring holder 33, and a second end 342 of the torsion spring 34 is detachably connected with the mandrel 32.

[0083] When the reel body 30 is assembled, the torsion spring bracket 33 is fitted to the mandrel 32 and is radially spaced apart from the mandrel 32 so that the torsion spring bracket 33 can rotate relative to the mandrel 32. The torsion spring 34 is also rotatably mounted to the mandrel 32, and the first end 341 of the torsion spring 34 is connected to the torsion spring bracket 33, and the second end 342 of the torsion spring 34 is connected to the first rope wheel 36a. Of course, the second end 342 of the torsion spring 34 can also be connected to the mandrel 32, or simultaneously connected to the first rope wheel 36a and the mandrel 32 (which will be described in detail later). Then, the mandrel 32 (together with the torsion spring bracket 33 and the torsion spring 34) is inserted into the sleeve 31, and the first connecting protrusion 331 on the torsion spring bracket 33 is aligned with the connecting groove 311 on the sleeve 31 so that the first connecting protrusion 331 engages with the connecting groove 311 and slides along the connecting groove 311 until the mandrel 32 is mounted to a predetermined position. In this way, the assembly of the reel body 30 is conveniently completed, and no riveting operation is required between the sleeve 31 and the torsion spring bracket 34 during the assembly of the reel body 30. When the reel body 30 is disassembled, the mandrel 32 (together with the torsion spring bracket 33 and the torsion spring 34) is pulled out of the sleeve 31 in the axial direction L of the sleeve 31, and the first connecting protrusion 331 slides along the connecting groove 311 until the mandrel 32 is completely removed from the sleeve 31. Then, the torsion spring 34 and the torsion spring bracket 33 are detached from the mandrel 32. In this way, the sleeve 31, the mandrel 32, the torsion spring bracket 33 and the torsion spring 34 are easily disassembled. During the disassembly of the reel body 30, the sleeve 31, the mandrel 32, the torsion spring bracket 33 and the torsion spring 34 are not damaged. In this way, the reel body 30 can be assembled and disassembled many times, and the assembly and disassembly processes are relatively easy, which makes the maintenance of the sunshade curtain device 2 more convenient.

[0084] It should be noted that after the reel body 30 is assembled, the spring bracket 33 is between the mandrel 32 and the sleeve 31 and radially spaces apart the mandrel 32 and the sleeve 31.

[0085] When the curtain fabric 23 is unrolled, the user pulls the handle plate 233 on the curtain fabric 23 away from the roller body 30. The sleeve 31 is driven by the curtain fabric 23 to rotate forward and release the curtain fabric. The torsion spring holder 33 is engaged with the sleeve 31 and is thus driven by the sleeve 31 to rotate forward synchronously. The first end 341 of the torsion spring 34 is driven by the torsion spring holder 33 to rotate forward. The second end 342 of the torsion spring 34 is correspondingly driven to rotate forward and drives the first rope wheel 36a, the second rope wheel 36b and the mandrel 32 to rotate forward as well, so that the first rope wheel 36a and the second rope wheel 36b wind up the pull rope 25. When the curtain fabric 23 is rolled up, the user pulls the handle plate 233 on the curtain fabric 23 close to the roller body 30. The first rope wheel 36a, the second rope wheel 36b and the mandrel 32 are driven by the pull rope 25 to rotate reversely and release the pull rope. The second end 342 of the torsion spring 34 is driven by the mandrel 32 to rotate reversely. The first end 341 of the torsion spring 34 is correspondingly driven to rotate reversely and drives the sleeve 31 to rotate reversely to wind up the curtain fabric 23. In this way, during the unrolling of the curtain fabric 23, the load on the torsion spring 34 (or the degree to which the torsion spring 34 is twisted) remains unchanged or substantially unchanged, and the force with which the user pulls the curtain fabric 23 also remains unchanged or substantially unchanged, which avoids the difficulty of completely unrolling the curtain fabric and improves the user's experience. For the rolling up of the curtain fabric 23, the load on the torsion spring 34 (or the degree to which the torsion spring 34 is twisted) also remains unchanged or substantially unchanged, which also avoids the difficulty of completely rolling up the curtain fabric and improves the user's experience.

[0086] It should be noted that when the curtain fabric 23 is completely unrolled or completely rolled up, the torsion spring 34 is still in a twisted state. In other words, the torsion spring 34 is in a pre-tensioned state after being connected with the torsion spring holder 33 and the mandrel 32. In this way, the torsion spring 34 always applies a driving force to the sleeve 31 and the two rope wheels, so that the pull rope 25 and the curtain fabric 23 are always in a tensioned state.

[0087] As described above, during the assembly of the roller body 30, there is no riveting operation between the sleeve 31 and the torsion spring holder 33. This helps to avoid the deformation of the torsion spring holder 33 due to the riveting operation or the connection of the torsion spring holder 33 with the mandrel 32, which in turn causes the torsion spring holder 33 and the sleeve 31 to be unable to rotate relative to the mandrel 32, resulting in the damage of the sunshade curtain device 2.

[0088] As also described above, the torsion spring holder 33 is engaged with the sleeve 31 in a generally splined manner. In this way, the engagement stability of the sleeve 31 with the torsion spring holder 33 is high, so that the sleeve 31 can smoothly drive the torsion spring holder 33 to rotate. Of course, according to actual conditions, only one connecting groove can be provided on the sleeve, and correspondingly only one first connecting protrusion is provided on the torsion spring holder, as long as the sleeve can smoothly drive the torsion spring holder to rotate.

[0089] AsFigure 7 As shown, a retaining sleeve 37 is fixedly arranged on the mandrel 32, for example, at a middle portion of the mandrel 32. A first limiting portion 373 protruding radially outward is arranged on a circumferential outer surface of the retaining sleeve 37.

[0090] With reference to Figure 5 and Figure 9 , the torsion spring holder 33 is sleeved on the retaining sleeve 37 and abuts against the first limiting portion 373, and the torsion spring 34 is located at the other side of the first limiting portion 373 away from the torsion spring holder 33. Thus, the torsion spring holder 33 cannot move in a direction towards the first limiting portion 373 under the blockage of the first limiting portion 373. In addition, since the first end 341 of the torsion spring 34 is connected to the torsion spring holder 33, the torsion spring holder 33 is constrained by the torsion spring 34 and cannot or substantially cannot move in a direction away from the first limiting portion 373. In other words, the torsion spring holder 33 cannot move axially under the constraint of the first limiting portion 373 and the torsion spring 34, thus achieving the positioning of the torsion spring holder 33 on the retaining sleeve 37, and the torsion spring holder 33 cannot fall off from the retaining sleeve 37 (or the mandrel 32). When assembling and disassembling the reel body 30, the torsion spring holder 33, the torsion spring 34, the retaining sleeve 37 and the mandrel 32 are inserted into or taken out of the sleeve tube 31 as a whole, which facilitates the assembly and disassembly operations of the reel body 30.

[0091] It should be noted that the torsion spring holder 33 is clearance-fitted with the retaining sleeve 37, so that the torsion spring holder 33 can rotate relative to the retaining sleeve 37 (or the mandrel 32).

[0092] In one embodiment, as shown in Figure 7 , the retaining sleeve 37 has a first mounting section 371 and a second mounting section 372 adjacent to the first mounting section 371. The diameter of the first mounting section 371 is smaller than the diameter of the second mounting section 372, so that a shoulder between the first mounting section 371 and the second mounting section 372 forms the first limiting portion 373. In this case, the torsion spring holder 33 is rotatably sleeved on the first mounting section 371, and a portion of the torsion spring 34 is sleeved on the second mounting section 372. In other embodiments, the retaining sleeve can also have other forms, for example, the diameter of the first mounting section and the diameter of the second mounting section can be equal or unequal, but both are smaller than the diameter of the first limiting portion (i.e., the first limiting portion is configured as a protruding ridge from the circumferential outer surface of the retaining sleeve).

[0093] Also as shown in Figure 7As shown, two radially opposing anti-rotation slots 321 are provided on the circumferential outer surface of the mandrel 32. Each anti-rotation slot 321 extends generally along the axial direction of the mandrel 32, and the bottom of each anti-rotation slot 321 is flat. The retaining sleeve 37 is generally U-shaped to engage with the two anti-rotation slots 321. In this way, the retaining sleeve 37 cannot rotate circumferentially relative to the mandrel 32, and the retaining sleeve 37 is blocked by the ends of the two anti-rotation slots 321 along the axial direction of the mandrel 32, and therefore cannot move axially relative to the mandrel 32. Thus, the retaining sleeve 37 is fixedly mounted on the mandrel 32. Of course, the retaining sleeve can also be fixedly mounted on the mandrel in other ways, such as by adhesive or by screws, which will not be described in detail here.

[0094] In other embodiments not shown, a shoulder may also be provided on the mandrel. A torsion spring bracket and a torsion spring are located on opposite sides of the shoulder. The torsion spring bracket is rotatably fitted onto the mandrel and abuts against the shoulder; the torsion spring is also fitted onto the mandrel. In this case, it is unnecessary to provide a retaining sleeve as described above on the mandrel.

[0095] For example Figure 5 As shown, the reel body 30 also includes two support sleeves (i.e., a first support sleeve 38a and a second support sleeve 38b) rotatably sleeved on the spindle 32. For example, the two support sleeves are configured to be close to both ends of the spindle 32 and respectively abut against corresponding pulleys (e.g., the first support sleeve 38a abuts against the first pulley 36a, and the second support sleeve 38b abuts against the second pulley 36b).

[0096] The first support sleeve 38a and the second support sleeve 38b are basically the same. For simplicity, only the structure of the first support sleeve 38a will be described below. Figure 10 As shown, the first support sleeve 38a includes a first section 381 and a second section 382 adjacent to the first section 381. The diameter of the first section 381 is smaller than the diameter of the second section 382, ​​thus forming a second limiting portion 383 between the first section 381 and the second section 382. After the first support sleeve 38a is fitted onto the mandrel 32, the first section 381 faces the torsion spring bracket 33, and the end of the second section 382 abuts against the first pulley 36a.

[0097] like Figure 5 As shown, each end of the sleeve 31 is detachably fitted onto the first section 381 of the corresponding support sleeve to facilitate the assembly and disassembly of the reel body 30. Each end of the sleeve 31 also abuts against the corresponding second limiting part 383. In this way, the two support sleeves (or the second limiting parts 383) axially limit the sleeve 31 and provide radial support for the sleeve 31 (i.e., radially space the sleeve 31 from the mandrel 32). As a result, the stability of the sleeve 31 is improved, preventing the sleeve 31 (especially the two ends of the sleeve 31) from wobbling relative to the mandrel 32.

[0098] In other embodiments, the support sleeve can also be in other forms. For example, the diameter of the first section and the diameter of the second section can be equal or unequal, but both are smaller than the diameter of the second limiting part (i.e., the second limiting part is a protruding ridge protruding from the circumferential outer surface of the support sleeve).

[0099] As shown in FIG. 3, the first support sleeve 38a is provided with a first section 381 and a second section 382. The first section 381 is provided with a first connecting protrusion 383. The second section 382 is provided with a second connecting protrusion 384. Figure 10 As shown in FIG. 3, the first support sleeve 38a is provided with a first section 381 and a second section 382. The first section 381 is provided with a first connecting protrusion 383. The second section 382 is provided with a second connecting protrusion 384.

[0100] The first rope wheel 36a and the second rope wheel 36b are basically the same in structure. For simplicity, only the first rope wheel 36a will be described below. As shown in FIG. 4, the first rope wheel 36a has a mounting part 361 and a rope winding part 363 connected to the mounting part 361. Figure 11 As shown in FIG. 4, the mounting part 361 is fixedly connected to the mandrel 32. For example, the mounting part 361 is provided with a flat shaft hole 364 inside, and the mandrel 32 is inserted into the shaft hole 364. In this case, the first support sleeve 38a is rotatably sleeved onto the mounting part 361 of the first rope wheel 36a, and the rope winding part 363 abuts against the end of the second section 382 of the first support sleeve 38a. Of course, according to actual conditions, the first rope wheel can also be fixedly installed on the mandrel in other ways. For example, the mounting part of the first rope wheel is inserted into the mandrel and then fixed by bolts.

[0101] As shown in FIG. 4, the torsional spring 34 is installed between the torsional spring bracket 33 and the first rope wheel 36a. Figure 5 As shown in FIG. 4, the first end 341 of the torsional spring 34 is provided with a first pull hook 341a.

[0102] As shown in FIG. 4, the torsional spring bracket 33 is provided with a first connecting hole 332. The first pull hook 341a of the torsional spring 34 is detachably connected into the first connecting hole 332, which facilitates the connection and disconnection of the torsional spring 34 and the torsional spring bracket 33. Figure 9 Figure 8 As shown in FIG. 4, the first pull hook 341a of the torsional spring 34 is detachably connected into the first connecting hole 332, which facilitates the connection and disconnection of the torsional spring 34 and the torsional spring bracket 33.

[0103] As shown in FIG. 4, the first pull hook 341a of the torsional spring 34 is detachably connected into the first connecting hole 332, which facilitates the connection and disconnection of the torsional spring 34 and the torsional spring bracket 33. Figure 8 ​As shown, a toothed groove 333 is formed between two adjacent first connecting protrusions 331 of the torsion spring bracket 33. Engaging teeth 312 are formed between two adjacent connecting grooves 311 on the sleeve 31 (e.g., ...). Figure 6 (As shown). The engaging tooth 312 is detachably engaged into the corresponding tooth groove 333, and the engaging tooth 312 and the tooth groove 333 are capable of sliding relative to each other along the axial direction L of the sleeve 31. A first connecting hole 332 and a receiving groove 334 connected to the first connecting hole 332 are provided in one tooth groove 333, and the receiving groove 334 is radially recessed inward relative to the bottom surface of the tooth groove 333. A first hook 341a extends within the receiving groove 334 and connects to the first connecting hole 332. Thus, as... Figure 9 As shown, the first hook 341a does not protrude from the bottom surface of the tooth groove 333, thus avoiding the first hook 341a from obstructing the engagement of the torsion spring bracket 33 and the sleeve 31 (or the engagement of the engagement tooth 312 and the tooth groove 333).

[0104] Reference Figure 11 and Figure 12 A second connecting hole 362 is provided on the mounting part 361 of the first sheave 36a. For example... Figure 13 As shown, a second hook 342a is provided at the second end 342 of the torsion spring 34. The second hook 342a is detachably connected to the second connecting hole 362, facilitating the connection and disconnection of the torsion spring 34 and the first pulley 36a. In one embodiment, a connecting hole (not shown) corresponding to the second connecting hole 362 is provided on the spindle 32. In this case, the second hook 342a of the torsion spring 34 is detachably connected to both the second connecting hole 362 and the connecting hole on the spindle. Thus, the second hook of the torsion spring also helps to securely connect the first pulley to the spindle.

[0105] Reference Figure 9 and Figure 13 The main body portion 343 of the torsion spring 34, excluding the first hook 341a and the second hook 342a (i.e., the helical portion of the torsion spring), is not used for mounting and securing the torsion spring 34. In some prior art, a variable diameter portion is provided in the main body portion of the torsion spring, and the variable diameter portion is connected to the torsion spring bracket or other components. Compared with this prior art, the diameter of the main body portion 343 of the torsion spring 34 in this application is equal or substantially equal at all points, which simplifies the manufacturing of the torsion spring of this application. Moreover, compared with torsion springs in the prior art that are mounted via a variable diameter portion, the torsion spring of this application is easier to install and remove.

[0106] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A roller assembly for a vehicle sun shade device, the roller assembly comprising: The reel assembly comprises a reel body and two rope wheels, the reel body comprises: a sleeve, a connecting groove extending along the axial direction of the sleeve is arranged on the circumferential inner surface of the sleeve; a mandrel extending through the sleeve and adapted to rotate with the sleeve; the two rope wheels are respectively mounted at both ends of the mandrel and rotate synchronously with the mandrel; a torsional spring support in the interior of the sleeve; a first connecting protrusion is arranged on the torsional spring support; the first connecting protrusion is adapted to be detachably engaged with the connecting groove, so that the torsional spring support is adapted to be driven by the sleeve to move synchronously; and a torsional spring in the interior of the sleeve; a first end of the torsional spring is adapted to be detachably connected with the torsional spring support, and a second end is adapted to be detachably connected with the mandrel and / or the corresponding rope wheel.

2. The reelex assembly of claim 1, wherein, A plurality of connecting grooves are arranged on the circumferential inner surface of the sleeve, and the plurality of connecting grooves are spaced apart along the circumferential direction of the sleeve; The torsional spring support is annular, and a plurality of first connecting protrusions are arranged on the circumferential outer surface of the torsional spring support; the plurality of first connecting protrusions are respectively adapted to be detachably engaged with the plurality of connecting grooves.

3. A reelpn assembly according to claim 1 or 2, wherein, The torsional spring support is provided with a central hole, so that the torsional spring support is adapted to be rotatably sleeved on the mandrel.

4. The reelex assembly of claim 3, wherein, The mandrel is provided with a shaft shoulder, and the torsional spring support is adapted to abut against the shaft shoulder.

5. The reelex assembly of claim 3, wherein, A retaining sleeve is fixedly arranged on the mandrel, the retaining sleeve is provided with a first limiting portion protruding from the circumferential outer surface of the retaining sleeve; the torsional spring support is adapted to be rotatably sleeved on the retaining sleeve and abut against the first limiting portion, and the torsional spring is located on the side of the first limiting portion away from the torsional spring support.

6. The reelex assembly of claim 1, wherein, A first connecting hole is arranged on the torsional spring support; a first pull hook is arranged on the first end of the torsional spring, and the first pull hook is detachably connected into the first connecting hole.

7. A reelpn assembly according to claim 1 or 2, wherein The reel body further comprises two support sleeves rotatably sleeved on the mandrel; each of the support sleeves is provided with a second limiting portion protruding from the circumferential outer surface of the support sleeve, and each of the support sleeves comprises a first section on the side of the second limiting portion facing the torsional spring support; Both ends of the sleeve are adapted to be detachably engaged with two first sections respectively, and both ends of the sleeve are adapted to abut against the two second limiting portions respectively; the two rope wheels abut against the end portions of the two support sleeves respectively.

8. The reelex assembly of claim 7, wherein, A second connecting protrusion is arranged on the circumferential outer surface of each first section; the second connecting protrusion is adapted to be detachably engaged with the connecting groove of the sleeve, so that the sleeve is adapted to drive the two support sleeves to rotate synchronously.

9. The reelex assembly of claim 8, wherein, A plurality of connecting grooves are arranged on the circumferential inner surface of the sleeve, and the plurality of connecting grooves are spaced apart along the circumferential direction of the sleeve; A plurality of second connecting protrusions are arranged on the circumferential outer surface of each first section; The plurality of second connecting protrusions are respectively adapted to be detachably engaged with the plurality of connecting grooves.

10. The reelex assembly of claim 1, wherein, The second end of the torsional spring is configured with a second pull hook; the second pull hook is detachably connected with the rope wheel corresponding to the second end of the torsional spring.

11. A vehicle sunshade device, characterized by, The vehicle sunshade curtain device comprises: The roller assembly for a vehicle sunshade curtain device according to any one of claims 1 to 10; a curtain cloth comprising a first lateral edge and a second lateral edge arranged oppositely, the second lateral edge being connected with the sleeve, the first lateral edge being adapted to be driven to move the curtain cloth; and a pull cord connected with the curtain cloth, two ends of the pull cord being connected with the two rope wheels respectively; wherein, when the curtain cloth is released from the roller body and unfolded, the sleeve and the torsion spring support rotate and twist the torsion spring, the core shaft and the rope wheels are driven to rotate by the torsion spring to wind the pull cord; and when the curtain cloth is wound onto the roller body, the pull cord is released from the rope wheels, the rope wheels and the core shaft rotate and twist the torsion spring, the sleeve and the torsion spring support are driven to rotate by the torsion spring to wind the curtain cloth.

12. The vehicle sunshade apparatus of claim 11, wherein, the torsion spring is configured to remain in a twisted state when the curtain cloth is fully unfolded or fully wound.

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