Sunshade device for vehicle

Abstract

A vehicle sunshade device includes: a first rope connected to one end of the top portion of the sunshade and wound by a first roller member that rotates in a first retraction direction; a second rope connected to the other end of the top portion of the sunshade and wound by a second roller member that rotates in a second retraction direction; and a rotation drive mechanism that rotates the second roller member in a second retraction direction when the first roller member is rotated in the first retraction direction, and rotates the second roller member in a direction opposite to the second retraction direction when the first roller member is rotated in a direction opposite to the first retraction direction. This allows the sunshade to be moved appropriately.

Description

Technical Field

[0001] This invention relates to a vehicle sunshade device installed on the roof of a vehicle. Background Technology

[0002] Conventionally, sunshade devices (sunshade devices) that use flexible sheets to block light from openings in a vehicle roof are known (for example, see Patent Document 1). One end of the flexible sheet in this sunshade device is held in a manner that allows it to be wound and unwound on a retractable shaft rotatably mounted about a rotation axis. The other end of the flexible sheet is connected to a pull-out profile that can be guided and displaced along the pull-out direction. Furthermore, at one end of the retractable shaft, a retracting portion is integrally rotatably fixed to hold one end of a first tension strand, the other end of which is held by a first retracting element. Further, at each end of the pull-out profile, a second tension strand is connected, the end of which is held by a second retracting element. The first and second retracting elements are rotatably driven by a drive unit via a common shaft.

[0003] When the flexible sheet wound on the take-up reel is pulled out to block the light from the roof opening, the drive unit rotates the first and second take-up elements in one direction, causing the first tension strand to unwind (feed out) from the first take-up element, and the second take-up element to take in two second tension strands. Thus, the flexible sheet is pulled out of the take-up reel by the two second tension strands taken in by the second take-up element. Further, based on the movement of the pulled-out profile, the take-up reel rotates, and the first tension strand fed out from the first take-up element is taken in by the take-up portion of the rotating take-up reel. Conversely, when the flexible sheet is wound onto the take-up reel to release the light from the roof opening, the drive unit rotates the first and second take-up elements in another direction, causing the first take-up element to take in the first tension strand, and the second take-up element to unwind (feed out) two second tension strands. Therefore, according to the winding of the first tension strand by the first winding element, the winding shaft rotates in the manner of winding the light-blocking sheet, and by sending out two second tension strands from the second winding element, the pulled-out profile is allowed to move toward the winding shaft side.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: German Patent Application Publication No. 102018205500.

[0007] The problem that the invention aims to solve

[0008] However, in the aforementioned conventional light-shielding devices, it is not easy to make the feed amount of the first tension strand based on the first take-up element consistent with the take-up amount of the two second tension strands based on the second take-up element, or to make the take-up amount of the first tension strand based on the first take-up element consistent with the feed amount of the two second tension strands based on the second take-up element. Furthermore, since the second take-up element simultaneously takes up and feeds out the two second tension strands, it is also difficult to make the take-up amount of the two second tension strands based on the second take-up element consistent with each other, and to make the feed amount of the two second tension strands based on the second take-up element consistent with each other. Therefore, in the aforementioned light-shielding devices, the pull-out profile moves in a state of inclination relative to the take-up shaft, sometimes making it impossible to properly move (open and close) the flexible sheet. Summary of the Invention

[0009] Therefore, the main objective of this invention is to provide a vehicle sunshade device that allows for proper movement of the sunshade curtain.

[0010] Technical means for solving problems

[0011] The vehicle sunshade device of the present invention is disposed relative to the roof of a vehicle and includes: a sunshade curtain; a retraction member for retracting the sunshade curtain; a first roller member rotatable about a first axis; a second roller member rotatable about a second axis extending parallel to the first axis; a first rope; a second rope; and a rotation drive device that rotates the first roller member about the first axis and the second roller member about the second axis. The first rope is connected to one end of the top portion of the sunshade curtain and is retracted by the first roller member when the first roller member rotates in a predetermined first retraction direction. The second rope is connected to the other end of the top portion of the sunshade curtain and is retracted by the second roller member when the second roller member rotates in a predetermined second retraction direction. When the first drum component is rotated in the first winding direction, the rotary drive device rotates the second drum component in the second winding direction. When the first drum component is rotated in the opposite direction to the first winding direction, the rotary drive device rotates the second drum component in the opposite direction to the second winding direction.

[0012] In the vehicle sunshade device of the present invention, a first rope is wound up by a first drum member, and a second rope is wound up by a second drum member separate from the first drum member. Therefore, it is easy to make the winding amount of the first rope based on the first drum member consistent with the winding amount of the second rope based on the second drum member, and it is also easy to make the delivery amount of the first rope based on the first drum member consistent with the delivery amount of the second rope based on the second drum member. Therefore, in the vehicle sunshade device of the present invention, the sunshade can be moved appropriately. Attached Figure Description

[0013] Figure 1 This is a perspective view showing the main parts of a vehicle incorporating the vehicle sunshade device of the present invention.

[0014] Figure 2 This is a schematic structural diagram showing the vehicle sunshade device of the present invention.

[0015] Figure 3 This is a front view showing the first and second roll members included in the vehicle sunshade device of the present invention.

[0016] Figure 4 This is a top view showing the first relaxation absorption mechanism included in the vehicle sunshade device of the present invention.

[0017] Figure 5 This is a top view showing the second relaxation absorption mechanism included in the vehicle sunshade device of the present invention.

[0018] Figure 6 This is a partial cross-sectional view showing the third relaxation absorption mechanism included in the vehicle sunshade device of the present invention.

[0019] Figure 7 It is along Figure 6 A sectional view of line VII-VII in the diagram.

[0020] Figure 8 This is a schematic structural diagram illustrating the operation of the vehicle sunshade device of the present invention.

[0021] Figure 9 This is a schematic diagram illustrating the operation of the vehicle sunshade device of the present invention.

[0022] Figure 10 This is a schematic structural diagram illustrating the operation of the vehicle sunshade device of the present invention. Detailed Implementation

[0023] Next, with reference to the accompanying drawings, the method for carrying out the invention disclosed herein will be described.

[0024] Figure 1 This is a perspective view of a vehicle V including the vehicle sunshade device (hereinafter simply referred to as "sunshade device") 1 of the present invention. The vehicle V includes a sunroof device SR disposed between a front roof panel Rf and a rear roof panel Rr fixed to the vehicle body F. The sunshade device 1 is mounted to the vehicle body F in such a way that it is located below the transparent movable panel Pm and the transparent fixed panel Pf of the sunroof device SR. However, the sunshade device 1 may also be mounted to the vehicle body F in such a way that it is located below a fixed transparent roof (glass roof) disposed between the front roof panel Rf and the rear roof panel Rr.

[0025] like Figure 2 As shown, the sunshade device 1 includes a sunshade curtain 2, a retractable member 3, a sunshade rod 4, a pair (two) sliding shoes 5L and 5R, a pair (two) guide members 6, and a rotary drive device 10 for opening and closing the sunshade curtain 2. The sunshade curtain 2 is, for example, a rectangular light-blocking sheet made of fabric, having an area capable of completely covering the light-transmitting portion of the movable panel Pm and the fixed panel Pf of the skylight device SR. Furthermore, the sunshade curtain 2 may also have heat insulation properties.

[0026] The retractor 3 is a cylindrical body with a relatively small outer diameter (e.g., about 10-30 mm), and the base end of the sunshade 2 is fixed (locked) to the outer circumferential surface of the retractor 3. Additionally, a generally conical (frustum-shaped) reel (winding member) 30 is coaxially mounted at one end of the retractor 3 in the axial direction (in this embodiment, the end on the left side of the vehicle V). In this embodiment, the reel 30 is mounted to the retractor 3 with its large-diameter side (bottom side) located on the retractor 3 side, allowing it to rotate coaxially and integrally with the retractor 3. Furthermore, by causing the retractor 3 and the reel 30 to rotate around their axis As (refer to...) Figure 2 Rotating in a predetermined retraction direction allows the sunshade 2 to be rolled up onto the retraction member 3 and then opened. Additionally, a winding groove 31 extending spirally around the axis As of the roller 30 is formed on the outer circumferential surface of the roller 30 (see reference). Figure 6 ).

[0027] The sunshade rod 4 is formed into a hollow shape by extrusion molding, for example, aluminum alloy. The sunshade rod 4 is fixed to the top end of the sunshade curtain 2 (the end opposite to the base end fixed to the retractor member 3). In this embodiment, a cylindrical portion for inserting a rod is formed at the top end of the sunshade curtain 2. This cylindrical portion and the rod are fitted into a sunshade curtain retaining groove (not shown) formed in the sunshade rod 4, thereby fixing the sunshade rod 4 to the top end of the sunshade curtain 2. The sliding shoes 5L and 5R in this embodiment are formed of, for example, resin containing potassium titanate fibers and have a bilaterally symmetrical structure. Each sliding shoe 5L and 5R is inserted from the corresponding long side end of the sunshade rod 4 into the internal space 4x of the sunshade rod 4 and fixed to the sunshade rod 4.

[0028] Each guide member 6 is formed by extrusion molding, for example, aluminum alloy, and has a uniform cross-sectional shape in the long side direction. Each guide member 6 supports the corresponding sliding shoe 5L or 5R and the corresponding side end of the sunshade 2 for free sliding. A pair of guide members 6 extend parallel to each other with a gap corresponding to the width of the sunshade 2 and are fixed to the housing 7 housing the rotary drive device 10 and a support member (not shown) via bolts or the like. The housing 7 and the support member are fixed to the vehicle body F below the sunroof device SR such that the retractable member 3 extends in the width direction of the vehicle V and the pair of guide members 6 extend in the front-rear direction of the vehicle V. In this embodiment, the housing 7 is located on the front side of the vehicle V, and the retractable member 3 is supported on the rear side of the vehicle V by a bracket (not shown) for free rotation.

[0029] The rotation drive device 10 of the sunshade device 1 pulls a first rope S1 and a second rope S2 to move the top end of the sunshade rod 4, i.e., the sunshade curtain 2, away from the retracting member 3, and pulls a third rope S3 to make the retracting member 3 rotate about the axis As. Figure 2 As shown, the rotary drive device 10 includes a first drum component 11, a second drum component 12, a single motor M as the rotary drive source, and a power transmission mechanism T.

[0030] The first roll member 11 is formed from resin or the like into an outer peripheral surface with a cylindrical shape, and can rotate freely about a first axis A1. Additionally, as... Figure 3 As shown, a winding groove 111 extending spirally around a first axis A1 is formed on the outer peripheral surface of the first winding member 11. Furthermore, the first winding member 11 includes a first gear G1, which is a spur gear or helical gear coaxial with and integrally rotatable from the first winding member 11. The first gear G1 can be integrally formed with the first winding member 11, or it can be formed separately from the first winding member 11 and fixed to the first winding member 11.

[0031] The second roll member 12 is formed from resin or the like into an outer peripheral surface with a cylindrical shape, and can rotate freely about the second axis A2. Additionally, as... Figure 3 As shown, a winding groove 121 extending spirally around a second axis A2 is formed on the outer peripheral surface of the second winding member 12. Furthermore, the second winding member 12 includes a second gear G2, which is a spur gear or helical gear coaxial with and integrally rotatable with the second winding member 12. The second gear G2 can be integrally formed with the second winding member 12, or it can be formed separately from the second winding member 12 and fixed to it. The first winding member 11 and the second winding member 12 are arranged in the vehicle width direction of the vehicle V such that the first axis A1 and the second axis A2 are parallel to each other and extend in the vertical direction.

[0032] The first rope S1 is, for example, a wire (metal wire) with an outer diameter of about 0.6 to 1.5 mm. However, the first rope S1 may also be a wire formed of chemical fibers, etc. A fixing member (not shown) is installed at the base end of the first rope S1, which fits into the fitting portion formed on the upper end (one end) of the outer peripheral surface of the first drum member 11. Thus, the base end of the first rope S1 is fixed to the upper end of the outer peripheral surface of the first drum member 11. Figure 3 As can be seen, when the first drum component 11 is wound around the first axis A1 in a predetermined first winding direction (refer to...) Figure 8 When rotating (in the direction of the arrow in the diagram), the first rope S1 is wound from the upper end side (one end side) of the first drum member 11 toward the lower end side (the other end side) into the winding groove 111. In addition, the first rope S1 protrudes outward from the winding groove 111 in a tangential direction relative to the winding groove 111.

[0033] like Figure 2 and Figure 4 As shown, the top end of the first rope S1 slides freely into the interior of a guide member 6, and also slides freely into a rope passage 5p formed at the outer end of a slipper 5L in the interior space 4x fixed to the sunshade rod 4 (see reference). Figure 4 Furthermore, the first rope S1 is connected to the sunshade rod 4 via the first slack absorption mechanism 51. Thus, the first rope S1 is connected to one end of the sunshade rod 4 (the top part of the sunshade 2) in the vehicle width direction via the rope passage 5p of the slipper 5L. Figure 4 (Left end side of the first rope S1). The first slack absorption mechanism 51 is capable of absorbing the slack of the first rope S1 and includes a sliding shoe 5L as a guide member, a slider 55, and a spring 57 as a force-applying member.

[0034] like Figure 4 As shown, in addition to the rope passage 5p, the sliding shoe 5L also includes a first guide space 5a, a second guide space 5b, and a spring support portion 5s. The first guide space 5a communicates with the rope passage 5p and is located at one end relative to the center of the sliding shoe 5L along its long side. Figure 4 The second guide space 5b extends along the long side from the left end of the first guide space 5a. The second guide space 5b communicates with the first guide space 5a, and extends towards the other end of the sunshade rod 4 compared to the first guide space 5a. Figure 4 The spring support portion 5s is formed on the inner end of the slide shoe 5L, located on the side opposite to the rope passage 5p, i.e., the central part of the sunshade rod 4 and inside the second guide space 5b.

[0035] The slider 55 of the first relaxation absorption mechanism 51 is a small piece formed of resin or the like, and is configured within the first guide space 5a of the slide 5L located at one end of the sunshade rod 4, allowing it to move freely (slide freely) along the long side of the sunshade rod 4 (slide 5L). The spring 57 of the first relaxation absorption mechanism 51 is a tension coil spring, configured within the first guide space 5a and the second guide space 5b. The base end of the spring 57 ( Figure 4 The right end of the spring 57 is fixed to the spring support 5s within the second guide space 5b, and the top end of the spring 57 ( Figure 4 The left end of the middle) is fixed to one end of the slider 55 within the first guide space 5a. Figure 4 (At the right end of the sunshade rod 4). Thus, the slider 55 is slidably disposed within the internal space 4x of the sunshade rod 4, and is directed by the spring 57 from one end of the sunshade rod 4 ( Figure 4 The left end of the middle) faces the direction of the central part ( Figure 4 (In the right direction) force is applied. Additionally, the top end of the first rope S1 is fixed to the other end of the slider 55 within the first guide space 5a of the slide 5L. Figure 4 (from the left end of the middle), thus connecting to the sunshade rod 4.

[0036] The second rope S2 is, for example, a wire (metal wire) with an outer diameter of about 0.6 to 1.5 mm. However, the second rope S2 can also be a wire formed of chemical fibers, etc. A fastener (not shown) is installed at the base end of the second rope S2, which fits into the fitting portion formed on the upper end (one end) of the outer peripheral surface of the second drum member 12. Thus, the base end of the second rope S2 is fixed to the upper end of the outer peripheral surface of the second drum member 12. Figure 3 As can be seen, when the second drum component 12 is wound around the second axis A2 in a predetermined second winding direction (refer to...) Figure 8 When rotating (in the direction of the arrow in the diagram), the second rope S2 is wound from the upper end side (one end side) of the second drum member 12 toward the lower end side (the other end side) into the winding groove 121. In addition, the second rope S2 protrudes outward from the winding groove 121 in a tangential direction relative to the winding groove 121.

[0037] like Figure 2 and Figure 5 As shown, the top end of the second rope S2 is slidably inserted into the interior of another guide member 6, and also slidably inserted into the rope passage 5p formed at the outer end of another slipper 5R fixed to the interior space 4x of the sunshade rod 4. Furthermore, the second rope S2 is connected to the sunshade rod 4 via the second relaxation absorption mechanism 52. Thus, the second rope S2 is connected via the rope passage 5p of the slipper 5R to the other end of the sunshade rod 4 (the top end of the sunshade 2) in the vehicle width direction. Figure 5(Right end of the middle). The second relaxation absorption mechanism 52 is a mechanism capable of absorbing the relaxation of the second rope S2. Similar to the first relaxation absorption mechanism 51 described above, it includes a sliding shoe 5R as a guide member, a slider 55, and a spring 57 as a force-applying member.

[0038] In addition to the rope passage 5p, the sliding shoe 5R also includes a first guide space 5a, a second guide space 5b, and a spring support portion 5s. The first guide space 5a of the sliding shoe 5R communicates with the rope passage 5p and is located on the opposite end side compared to the central portion along the long side of the sliding shoe 5R. Figure 5 The second guide space 5b extends along the long side from the right end of the first guide space 5a. The second guide space 5b is connected to the first guide space 5a, and extends towards the end of the sunshade rod 4 compared to the first guide space 5a. Figure 5 The spring support portion 5s is formed on the inner end of the slide shoe 5R, located on the side opposite to the rope passage 5p, i.e., the central part of the sunshade bar 4 and inside the second guide space 5b.

[0039] The slider 55 of the second relaxation absorption mechanism 52 is also a small piece formed of resin, etc., and is configured in the first guide space 5a of the slide 5R located on the other end side of the sunshade rod 4 so as to move freely (slide freely) in the direction of the long side of the sunshade rod 4 (slide 5R). The spring 57 of the second relaxation absorption mechanism 52 is also a tension coil spring, and is configured in the first guide space 5a and the second guide space 5b. The base end of the spring 57 ( Figure 5 The left end of the spring 57 is fixed to the spring support 5s within the second guide space 5b, and the top end of the spring 57 ( Figure 5 The right end of the middle) is fixed to one end of the slider 55 within the first guide space 5a. Figure 5 (At the left end of the middle). Thus, the slider 55 of the second relaxation absorption mechanism 52 is slidably disposed in the inner space 4x of the sunshade rod 4, and is directed by the spring 57 from the other end of the sunshade rod 4 ( Figure 5 The right end of the middle) faces the direction of the central part ( Figure 5 Applying force to the left (in the middle). Additionally, the top end of the second rope S2 is fixed to the other end of the slider 55 within the first guide space 5a of the slide 5R. Figure 5 (from the right end of the middle), thus connecting to the sunshade rod 4.

[0040] The third rope S3 is, for example, a wire (metal wire) with an outer diameter of about 0.6 to 1.5 mm. However, the third rope S3 may also be a wire formed of chemical fibers or the like. A fastener (not shown) is installed at the base end of the third rope S3, which fits into the fitting portion formed on the lower end (other end) of the outer peripheral surface of the second drum member 12. Thus, the base end of the third rope S3 is fixed to the lower end of the outer peripheral surface of the second drum member 12.

[0041] As from Figure 2 and Figure 3 As can be seen, when the second drum member 12 rotates around the second axis A2 in a direction opposite to the second winding direction, the third rope S3 is wound from the lower end side (the other end side) of the second drum member 12 toward the upper end side (one end side) into the winding groove 121. Furthermore, the third rope S3 protrudes from the winding groove 121 in a direction opposite to the tangential direction of the winding groove 121 and opposite to the second rope S2. The top end of the third rope S3 is fixed (locked) to the end of the roller 30 fixed to the large-diameter side of the winding member 3, and the third rope S3 is wound around the winding groove 31 of the roller 30 in a direction opposite to the winding direction of the sunshade 2.

[0042] In addition, such as Figure 6 As shown, a third slack-absorbing mechanism 60 for absorbing slack in the third rope S3 is disposed inside the retraction member 3, which is a hollow cylindrical body. The third slack-absorbing mechanism 60 includes a torsion spring 65, which is a force-applying member that applies force to the roller 30 in the opposite direction to the retraction direction of the sunshade 2 to absorb slack in the third rope S3. Furthermore, the roller 30 includes a shaft portion 33 and an outer cylinder member 35, which together with the torsion spring 65 form the third slack-absorbing mechanism 60 as an insertion portion. The shaft portion 33 extends axially from the end face of the roller 30 on the large diameter side to the side opposite to the end face of the small diameter side. The outer cylinder member 35 is a generally cylindrical body that functions as a retainer supporting the shaft portion 33 for rotational movement. It is inserted into the retraction member 3 and is fixed to the retraction member 3 in a rotatable manner.

[0043] like Figure 7 As shown, a plurality of protrusions (spurs) 3p are formed at circumferential intervals (equally spaced) on the inner circumferential surface of the winding member 3. In this embodiment, for example, twelve protrusions 3p are formed at 30° intervals on the inner circumferential surface of the winding member 3, each protrusion 3p protruding from the inner circumferential surface of the winding member 3 toward the axis As, and extending parallel to the axis As throughout the entire length of the winding member 3. Furthermore, as... Figure 7As shown, the outer cylinder member 35 forming the insertion portion of the spool 30 has a pair of recesses 35r formed at 180° intervals, so as to engage with any one of the plurality of protrusions 3p of the winding member 3. Each recess 35r is divided between two protrusions that protrude radially outward from the outer peripheral surface of the outer cylinder member 35 and extends axially along the entire length of the outer cylinder member 35. That is, the outer cylinder member 35 of the spool 30 is fixed to the winding member 3 in a rotatable manner integral with the winding member 3 by engaging the protrusions 3p of the winding member 3 with each of the pair of recesses 35r, thereby mounting the spool 30 to the winding member 3. Furthermore, the plurality of protrusions 3p of the winding member 3 and the pair(pl) recesses 35r of the outer cylinder member 35 form a position adjustment mechanism 90, which allows the fixed position of the third rope S3 in the spool 30 to be adjusted in the circumferential direction of the winding member 3.

[0044] The torsion spring 65 of the third relaxation absorption mechanism 60 is a so-called torsion helical spring, arranged within the outer cylinder member 35 in a manner extending coaxially with the axis As. One end of the torsion spring 65 ( Figure 6 The left end 65a of the torsion spring 65 is held by the shaft portion 33 of the spool 30 so that it cannot rotate relative to the spool 30 about the axis As. Additionally, the other end of the torsion spring 65 ( Figure 6 The right end (65b) is held by the outer cylinder member 35 so that it cannot rotate relative to the outer cylinder member 35, i.e., the retraction member 3, about the axis As. The torsion spring 65 is held by the shaft portion 33 of the roller 30 and the outer cylinder member 35 in a state where it is pre-torsional about the axis As in the retraction direction of the sunshade 2, so as to be in the retraction direction of the sunshade 2 relative to the retraction member 3 ( Figure 7 The opposite direction (counterclockwise) Figure 7 (In the clockwise direction) force is applied to the roller 30 relative to the outer cylinder component 35.

[0045] Furthermore, the third relaxation absorption mechanism 60 includes a first stop ST1 and a second stop ST2. For example... Figure 7 As shown, the first stop ST1 consists of a protrusion 33p that protrudes radially outward from the outer peripheral surface of the shaft portion 33 of the roller 30 and a first abutment surface 351 formed on the outer cylinder member 35. In this embodiment, the first end face of the protrusion 33p on the downstream side in the retraction direction of the sunshade 2 and the first abutment surface 351 extend radially and axially along the shaft portion 33. When the first end face of the protrusion 33p abuts against the first abutment surface 351 of the outer cylinder member 35, it restricts the rotation of the roller 30 relative to the retraction member 3 in the retraction direction of the sunshade 2.

[0046] like Figure 7As shown, the second stop ST2 is composed of a protrusion 33p of the shaft portion 33 and a second abutment surface 352. The second abutment surface 352 is formed on the outer cylinder member 35 in a circumferentially spaced manner from the first abutment surface 351 in a direction opposite to the retraction direction of the sunshade 2. In this embodiment, the second end face of the protrusion 33p on the upstream side in the retraction direction of the sunshade 2 and the second abutment surface 352 extend radially and axially along the shaft portion 33. When the second end face of the protrusion 33p abuts against the second abutment surface 352 of the outer cylinder member 35, it restricts the rotation of the roller 30 relative to the retraction member 3 in a direction opposite to the retraction direction of the sunshade 2.

[0047] When the shaft portion 33 of the roller 30, the outer cylinder component 35, and the torsion spring 65 are assembled into the winding component 3, the roller 30 is wound by the torsion spring 65 in a direction opposite to the winding direction of the sunshade 2. Figure 7 A force is applied in a clockwise direction, causing the second end face of the protrusion 33p to abut against the second contact surface 352 of the outer cylinder member 35. Furthermore, when the third rope S3 fixed to the spool 30 is wound and pulled by the second spool member 12, the first end face of the protrusion 33p of the spool 30 (shaft portion 33) abuts against the first contact surface 351 of the outer cylinder member 35. In this embodiment, the spring constant (stiffness) of the torsion spring 65 is set such that when the rotation of the second spool member 12 and the spool 30 stops, and when there is no slack in the third rope S3 between the second spool member 12 and the spool 30, the tension of the third rope S3 becomes slightly greater than the force of the torsion spring 65, thereby maintaining the state in which the first end face of the protrusion 33p abuts against the first contact surface 351 of the outer cylinder member 35.

[0048] like Figure 2 As shown, the rotary drive device 10 includes a third gear (idler) G3 that meshes with a first gear G1 of the first drum member 11 and a second gear G2 of the second drum member 12. Furthermore, the motor M of the rotary drive device 10 rotates the second drum member 12 about a second axis A2 in both forward and reverse directions via a power transmission mechanism T. Thus, the rotation of the first drum member 11 and the second drum member 12 is synchronized and they rotate in the same direction as the second drum member 12. In this embodiment, the first winding direction of the first drum member 11 and the second winding direction of the second drum member 12 are the same. Therefore, by rotating the motor M in the predetermined first direction, the first drum member 11 can be rotated in the first winding direction and the first rope S1 can be wound in the winding groove 111 of the first drum member 11, and the second drum member 12 can be rotated in the second winding direction and the second rope S2 can be wound in the winding groove 121 of the second drum member 12.

[0049] Furthermore, in the sunshade device 1, the parameters of the first drum member 11 including the winding groove 111 and the second drum member 12 including the winding groove 121 are set such that when the motor M rotates to the first direction by a predetermined angle, the winding amount of the first rope S1 based on the first drum member 11 and the winding amount of the second rope S2 based on the second drum member 12 become the same, and when the motor M rotates to the second direction opposite to the first direction by a predetermined angle, the delivery amount of the first rope S1 based on the first drum member 11 and the delivery amount of the second rope S2 based on the second drum member 12 become the same. Furthermore, in the sunshade device 1, the parameters of the second drum member 12, which includes the winding groove 121, are set such that when the motor M rotates to the first direction by a predetermined angle, the winding amount of the second rope S2 and the delivery amount of the third rope S3 based on the second drum member 12 become the same, and when the motor M rotates to the second direction by a predetermined angle, the delivery amount of the second rope S2 and the winding amount of the third rope S3 based on the second drum member 12 become the same.

[0050] In addition, in this embodiment, the motor M is, for example, a brushed DC motor, controlled by the control device 100 (see reference). Figure 2 The control device 100 includes a microcomputer with a CPU, ROM, RAM, input / output interfaces, etc., which controls the motor M based on the user's operation of the sunshade opening and closing switch (not shown). Additionally, the power transmission mechanism T includes, for example, a reducer, a gear mechanism, etc. Furthermore, the sunshade device 1 includes multiple pulleys P (see reference 1) supported by the housing 7, etc., and rotatable to restrict the path of the corresponding first rope S1, second rope S2, or third rope S3. Figure 2 ).

[0051] Next, refer to Figures 8 to 10 The operation of the aforementioned sunshade device 1 will be explained.

[0052] When the sunshade 2 is rolled up by the retractor 3 and at least partially open, and the user instructs the user to close (fully closed or partially closed) the sunshade 2 via the sunshade opening / closing switch, as follows: Figure 8 As shown, the control device 100 directs the second drum member 12 in the second winding direction ( Figure 8 The motor M of the rotary drive device 10 is controlled to rotate in a counterclockwise direction. When the second drum component 12 rotates in the second winding direction, the first drum component 11 rotates synchronously with the second drum component 12 and rotates in the first winding direction (counterclockwise). Figure 8 Rotate counterclockwise (in the middle).

[0053] When the motor M of the rotary drive device 10 rotates the first roller member 11 and the second roller member 12 in the first winding direction or the second winding direction, the first rope S1 is wound up by the first roller member 11, and the second rope S2 is wound up by the second roller member 12. Simultaneously, the top part of the sunshade rod 4, i.e., the sunshade curtain 2, is pulled by the first rope S1 and the second rope S2 towards the first roller member 11 and the second roller member 12, moving it away from the winding member 3. Thus, the sunshade curtain 2 can be pulled out from the winding member 3 to be fully closed or partially closed.

[0054] Furthermore, as the sunshade 2 is pulled out, the retractable member 3 rotates in the opposite direction to the retracting direction of the sunshade 2. Further, as... Figure 9 As shown by a single-dotted line, the rotary drive device 10 rotates the second drum member 12 in the second winding direction, while simultaneously feeding the third rope S3 from the winding slot 121 and winding the second rope S2 from the upper end side of the second drum member 12 toward the lower end side into the empty winding slot 121. Thus, according to the pulling out of the sunshade 2, the winding member 3 can be rotated in the opposite direction to the winding direction of the sunshade 2, winding the third rope S3 fed from the second drum member 12 into the reel 30 that rotates together with the winding member 3.

[0055] On the other hand, when the sunshade 2 is pulled out from the retractor 3 and at least partially closed, and the user instructs the user to open (fully open or half open) the sunshade 2 via the sunshade opening / closing switch, such as Figure 10 As shown, the control device 100 directs the second drum member 12 in a direction opposite to the second winding direction. Figure 10 The motor M of the rotary drive device 10 is controlled to rotate in a clockwise direction. When the second drum component 12 rotates in the opposite direction to the second winding direction, the first drum component 11 rotates synchronously with the second drum component 12 and rotates in the opposite direction to the first winding direction. Figure 10 Rotate clockwise.

[0056] When the motor M of the rotary drive device 10 rotates the first drum member 11 and the second drum member 12 in the opposite direction to the first winding direction or the second winding direction, the first rope S1 is fed out from the first drum member 11, and the second rope S2 is fed out from the second drum member 12. Furthermore, the third rope S3 is wound into the second drum member 12. Thus, by feeding out the first rope S1 and the second rope S2, while allowing the top part of the sunshade rod 4, i.e., the sunshade curtain 2, to move towards the winding member 3, the winding (pulling) of the third rope S3 causes the roller 30 and the winding member 3 to rotate in the winding direction of the sunshade curtain 2, thereby winding the sunshade curtain 2 into the winding member 3 and opening it. As a result, the sunshade curtain 2 can be wound into the winding member 3 and set to fully open or half open.

[0057] As described above, in the sunshade device 1, the first rope S1 is wound onto the first drum member 11, and the second rope S2 is wound onto the second drum member 12, which is separate from the first drum member 11. Therefore, it is easy to make the winding amount of the first rope S1 based on the first drum member 11 and the winding amount of the second rope S2 based on the second drum member 12 consistent, and it is also easy to make the delivery amount of the first rope S1 based on the first drum member 11 and the delivery amount of the second rope S2 based on the second drum member 12 consistent. Furthermore, the second drum member 12 delivers a third rope S3 while winding the second rope S2, and winds up the third rope S3 while delivering the second rope S2. Therefore, it is easy to make the winding amount of the second rope S2 based on the second drum member 12 and the delivery amount of the third rope S3 consistent, and it is also easy to make the delivery amount of the second rope S2 based on the second drum member 12 and the winding amount of the third rope S3 consistent.

[0058] As a result, the top part of the sunshade rod 4, i.e., the sunshade curtain 2, is prevented from moving in an inclined state relative to the retracting member 3, allowing the sunshade curtain 2 to be moved (opened and closed) appropriately. Furthermore, when the second roller member 12 is rotated, the second rope S2 and the third rope S3 are prevented from interfering with each other, while one of the second rope S2 and the third rope S3 is being fed out and the other is being rolled up. Thus, the increase in the axial length of the second roller member 12 can be prevented. Therefore, in the sunshade device 1, the overall size of the device is prevented, and the sunshade curtain 2 can be moved appropriately.

[0059] Furthermore, the first spool member 11 and the second spool member 12 each have a winding groove 111 or winding groove 121 formed on their outer peripheral surface in a spiral manner extending around the first axis A1 or the second axis A2. The second rope S2 is wound from the upper end (one end) of the second spool member 12 toward the lower end (the other end) in the winding groove 121, and the third rope S3 is wound from the lower end (the other end) of the second spool member 12 toward the upper end (one end) in the winding groove 121. Thus, when the second spool member 12 is rotated, the second rope S2 and the third rope S3 can be prevented from interfering with each other, while one of the second rope S2 and the third rope S3 is fed out of the winding groove 121 while the other is wound into the empty winding groove 121. As a result, the increase in the axial length of the second spool member 12 can be suppressed very well.

[0060] Furthermore, in the sunshade device 1, the force-applying mechanism (retractor) that applies force to the sunshade curtain 2 in the retracting direction can be omitted from the retracting member 3, enabling the retracting member 3 to be made smaller in diameter. Additionally, by adopting a structure in which the third rope S3 is wound into the second drum member 12 to open the sunshade curtain 2, the movable range of the sunshade curtain 2 is no longer limited by the force-applying mechanism. Furthermore, by omitting the force-applying mechanism, the overall device can be made lighter and less expensive. Moreover, the structure used to limit the paths of the first rope S1, the second rope S2, and the third rope S3 can be made shorter and simpler compared to gear cables, thereby enabling the overall device to be more compact. Furthermore, the losses associated with driving the first rope S1, the second rope S2, and the third rope S3 are also reduced compared to gear cables, thus preventing the rotary drive device 10 from becoming too large.

[0061] Furthermore, in the sunshade device 1, the first roller member 11 and the second roller member 12 are arranged in the width direction of the vehicle V. As a result, the increase in the dimensions of the sunshade device 1 in the height direction and the pull-out direction of the sunshade curtain 2 (the front-rear direction of the vehicle V) is suppressed, and the mounting capability of the sunshade device 1 can be well ensured.

[0062] Furthermore, in the sunshade device 1, the first winding direction of the first roller member 11 and the second winding direction of the second roller member 12 are in the same direction. The rotary drive device 10 includes a first gear G1 coaxial with the first roller member 11 and capable of rotating integrally, a second gear G2 coaxial with the second roller member 12 and capable of rotating integrally, a third gear G3 meshing with the first gear G1 and the second gear G2, and a single motor M for rotating the second roller member 12 in both directions. Thus, the first roller member 11 and the second roller member 12 can be rotated in either the first or second winding direction by a single motor M, and can also be rotated in the opposite direction to either the first or second winding direction. Furthermore, by using only one motor M, the number of parts in the rotary drive device 10 can be reduced to achieve cost reduction, and the rotary drive device 10, and consequently the sunshade device 1, can be made smaller and lighter. However, the rotary drive device 10 is only required to rotate the second drum member 12 in the second winding direction when the first drum member 11 is rotated in the first winding direction, and to rotate the second drum member 12 in the opposite direction to the second winding direction when the first drum member 11 is rotated in the opposite direction to the first winding direction. It is not limited to a device that includes a first gear G1, a second gear G2 and a third gear G3 and a single motor M.

[0063] Furthermore, in the sunshade device 1, a sunshade rod 4 with an internal space 4x is fixed to the top of the sunshade curtain 2. A first rope S1 is inserted into the internal space 4x from one end of the sunshade rod 4 and is connected to the sunshade rod 4 via a first slack absorption mechanism 51 that absorbs slack in the first rope S1. A second rope S2 is inserted into the internal space 4x from the other end of the sunshade rod 4 and is connected to the sunshade rod 4 via a second slack absorption mechanism 52 that absorbs slack in the second rope S2. Furthermore, the sunshade device 1 includes a third slack absorption mechanism 60 disposed inside the retraction member 3 and applying force to the roller 30 in a direction opposite to the retraction direction of the sunshade curtain 2.

[0064] That is, the sunshade 2, the first rope S1, the second rope S2, and the third rope S3 are components that elongate due to changes in ambient temperature, the application of tensile loads, etc. When at least one of the sunshade 2, the first rope S1, the second rope S2, and the third rope S3 elongates, the correlation between the amount of movement of the first rope S1 and the second rope S2 or the third rope S2 (the amount pulled out from the winding member 3) and the amount of movement of the sunshade 2 is disrupted, thereby causing at least one of the first rope S1, the second rope S2, and the third rope S3 to slack. Furthermore, when the slack of at least one of the first rope S1, the second rope S2, and the third rope S3 exceeds the allowable amount, it becomes impossible to properly move the sunshade 2 by winding the first rope S1, the second rope S2, and the third rope S3 onto the first winding member 11 and the second winding member 12, and there is also a possibility that the first rope S1, the second rope S2, and the third rope S3 may fall off the pulley P.

[0065] For example, if the sunshade 2 stretches, even if an attempt is made to close the sunshade 2 by winding the first rope S1 and the second rope S2 onto the first roller member 11 or the second roller member 12 by a predetermined amount, the sunshade 2 is only pulled out from the winding member 3 after the slack caused by the stretching has been eliminated. Therefore, the sunshade 2 is not pulled out from the winding member 3 by the predetermined amount, and the rotation of the winding member 3 and the roller 30 is insufficient, causing the first rope S1 and the second rope S2 to slack. Furthermore, if the sunshade 2 stretches, even if an attempt is made to open the sunshade 2 by winding the third rope S3 onto the second roller member 12 by a predetermined amount, the sunshade 2 is only wound onto the winding member 3 after the slack caused by the stretching has been eliminated. Therefore, the sunshade 2 is not wound onto the winding member 3 by the predetermined amount, and the third rope S3 slacks due to insufficient movement of the sunshade 2. Furthermore, when at least one of the first rope S1, the second rope S2, and the third rope S3 elongates, the first rope S1, etc., slacks at the point between the first drum member 11 and the sunshade rod 4.

[0066] Therefore, in the sunshade device 1, the first rope S1 and the second rope S2 are connected to the sunshade rod 4 via the first slack absorption mechanism 51 or the second slack absorption mechanism 52. Furthermore, in the sunshade device 1, the third slack absorption mechanism 60 is disposed inside the retraction member 3. Thus, even if at least any one of the sunshade curtain 2, the first rope S1, the second rope S2, and the third rope S3 elongates, slack in at least any one of the first rope S1, the second rope S2, and the third rope S3 can be suppressed, allowing the sunshade curtain 2 to be moved appropriately.

[0067] As described above, the first relaxation absorption mechanism 51 and the second relaxation absorption mechanism 52 include a slider 55 slidably disposed in the internal space 4x of the sunshade rod 4 and fixed to the top end of the first rope S1 or the second rope S2, and a spring 57 that applies force to the slider 55 from one end or the other end of the sunshade rod 4 toward the center of the sunshade rod 4. Figure 4 and Figure 5 As shown, when the first rope S1 or the second rope S2 does not slacken between the first drum member 11 or the second drum member 12 and the sunshade rod 4, the slider 55 of the first slackening absorption mechanism 51 and the second slackening absorption mechanism 52 overcomes the force of the spring 57 due to the tension from the first rope S1 or the second rope S2, and approaches one end or the other end of the sunshade rod 4 in the first guide space 5a of the slide 5L or the slide 5R.

[0068] Conversely, when the first rope S1 or the second rope S2 is about to slacken between the first drum member 11 or the second drum member 12 and the sunshade rod 4, the slider 55 moves towards the center of the sunshade rod 4 due to the decrease in tension of the first rope S1 or the second rope S2, under the force of the spring 57. Thus, through the movement of the slider 55, the first rope S1 or the second rope S2 is pulled in the direction from the first drum member 11 or the second drum member 12 towards the sunshade rod 4.

[0069] As a result, in the sunshade device 1, the slackness of the first rope S1 and the second rope S2 caused by the elongation of at least one of the sunshade curtain 2, the first rope S1, and the second rope S2 can be effectively suppressed. Furthermore, the internal space 4x of the sunshade rod 4 can be effectively used as a configuration space for the first slack-absorbing mechanism 51 and the second slack-absorbing mechanism 52, thereby effectively suppressing the enlargement of the sunshade device 1. Further, the first slack-absorbing mechanism 51 and the second slack-absorbing mechanism 52 include a sliding shoe 5L or a sliding shoe 5R fixed to the internal space 4x of the sunshade rod 4 as a guide member. Each sliding shoe 5L, 5R includes a spring support portion 5s supporting the base end of the spring 57 at the central portion of the sunshade rod 4 and a first guide space (guide portion) 5a supporting the slider 55 connected to the top end of the spring 57 at one end or the other end of the sunshade rod 4, allowing for free sliding. Thus, the sliding properties of the slider 55 can be well ensured, and the slackness of the first rope S1 and the second rope S2 can be effectively suppressed by the force of the spring 57.

[0070] Furthermore, in the sunshade device 1, when the third rope S3 is not slack between the second drum member 12 and the roller 30, the tension of the third rope S3 overcomes the force of the third slack absorption mechanism 60, i.e., the torsion spring 65, and the first end face of the protrusion 33p of the roller 30 (shaft portion 33) abuts against the first abutment surface 351 of the outer drum member 35. Thus, the rotation of the roller 30 relative to the winding member 3 in the winding direction of the sunshade 2 is limited by the first stop ST1. As a result, by winding the third rope S3 into the second drum member 12 (see reference...), Figure 7 (solid arrow in the image), or the third rope S3 is delivered from the second drum component 12 (see reference). Figure 7 (The dotted line arrows in the text) allow for the appropriate movement of the sunshade curtain 2.

[0071] Conversely, when the third rope S3 is about to slack between the second drum member 12 and the roller 30, the roller 30 rotates in the opposite direction to the retraction direction of the sunshade 2 by the force (restoring force) of the torsion spring 65, until the tension of the third rope S3 and the force of the third rope S3 reach equilibrium. Thus, the third rope S3 is wound onto the roller 30, and the slack of the third rope S3 is absorbed by the third slack absorption mechanism 60. As a result, in the sunshade device 1, even if at least one of the sunshade 2 and the third rope S3 elongates, the slack of the third rope S3 can be well suppressed, allowing the sunshade 2 to move appropriately.

[0072] Furthermore, in the sunshade device 1, the third relaxation absorption mechanism 60 is disposed inside the winding member 3, which is a cylindrical body. This allows the interior of the winding member 3 to be effectively used as the placement space for the third relaxation absorption mechanism 60, thereby effectively preventing the sunshade device 1 from becoming too large.

[0073] Furthermore, the third relaxation absorption mechanism 60 includes a first stop ST1 that restricts the rotation of the roller 30 relative to the retraction member 3 in the retraction direction of the sunshade 2. Thus, when the sunshade 2 is rolled up to the retraction member 3 and opened, even if a large tension is applied from the second roller member 12 to the third rope S3, which is pulled from the roller 30 and wound into the retraction slot 121, the rotation angle of the roller 30 relative to the retraction member 3 in the retraction direction of the sunshade 2, i.e., the amount of torsion of the torsion spring 65, can be limited to below a predetermined upper limit. As a result, it is possible to effectively suppress excessive tension applied from the roller 30 to the third rope S3 (tension in the retraction direction of the third rope S3 of the roller 30) and reduced durability of the torsion spring 65 due to excessive torsion in the retraction direction of the sunshade 2.

[0074] Furthermore, the third relaxation absorption mechanism 60 includes an outer cylinder member 35 and a torsion spring (force application member) 65. The outer cylinder member 35 is fixed to the winding member 3 via a position adjustment mechanism 90 in a manner that allows it to rotate integrally with the winding member 3, and is supported by a shaft portion 33 extending from the roller 30 for free rotation. The torsion spring 65 is held by the roller 30 (shaft portion 33) and the outer cylinder member 35, and applies force to the roller 30 relative to the outer cylinder member 35 in a direction opposite to the winding direction of the sunshade 2. As a result, the increase in the outer and inner diameters of the winding member 3 can be suppressed, and the third relaxation absorption mechanism 60, which applies force to the roller 30 in a direction opposite to the winding direction of the sunshade 2, can be disposed within the winding member 3.

[0075] Furthermore, during the manufacture of the sunshade device 1, the sunshade curtain 2 is rolled up to the winding member 3 under a pre-set force (e.g., approximately 100 N). Therefore, the thickness of the sunshade curtain 2 may vary individually, and depending on the thickness of the sunshade curtain 2, the amount of rolls (number of rolls) of the sunshade curtain 2 in the winding member 3 changes. This results in a deviation between the amount of rolls (pulling out) of the third rope S3 based on the rotary drive device 10 (second roller member 12), i.e., the amount delivered from the roller 30, and the amount of movement (delivery) of the sunshade curtain 2. In view of this, the sunshade device 1 includes a position adjustment mechanism 90 that allows the fixed position of the third rope S3 in the roller 30 to be adjusted circumferentially in the winding member 3 when the roller 30 is installed in the winding member 3.

[0076] That is, according to the position adjustment mechanism 90, when installing the roller 30 onto the winding member 3, the roller 30 is positioned relative to the winding member 3 in the winding direction of the sunshade 2. Figure 7 (counterclockwise direction) or pull-out direction ( Figure 7 After rotating the outer cylinder member 35 by a predetermined angle (e.g., 30°) clockwise, the pair of recesses 35r of the outer cylinder member 35 can be engaged with the protrusions 3p of the corresponding retracting member 3. Therefore, even if the amount of retraction of the sunshade 2 in the retracting member 3 changes according to the thickness of the sunshade 2, the fixed position of the rope in the retractor 30 can be offset (rotated) in the circumferential direction of the retracting member 3, thereby reducing the deviation between the amount of movement of the third rope S3 pulled from the retractor 30 by the rotation drive device 10 and the amount of movement of the sunshade 2.

[0077] Specifically, when the thickness of the sunshade 2 is thick and the amount of sunshade 2 rolled up towards the retractor 3 is small, the fixed position of the third rope S3 in the roller 30 can be offset (rotated) relative to the retractor 3's rolling direction towards the sunshade 2 by slackening the third rope S3 towards the second roller member 12. Conversely, when the thickness of the sunshade 2 is thin and the amount of sunshade 2 rolled up towards the retractor 3 is large, the fixed position of the third rope S3 in the roller 30 can be offset (rotated) relative to the retractor 3's pulling direction towards the sunshade 2 by pulling the third rope S3 towards the roller 30. As a result, in the sunshade device 1, regardless of the thickness of the sunshade 2, the sunshade 2 can be moved appropriately, and the increase in the driving force required to open and close the sunshade 2 can be suppressed.

[0078] Furthermore, in the sunshade device 1, the roller 30 includes an outer cylinder member 35 forming an insertion portion that is inserted into the winding member 3, which is a cylindrical body. The position adjustment mechanism 90 includes a plurality of protrusions 3p provided on the winding member 3 and at least one recess 35r provided on the outer cylinder member 35 of the roller 30 to engage with any one of the plurality of protrusions 3p. Thus, regardless of the rotational position (phase) of the winding member 3 that has rolled up the sunshade 2, the fixed position of the third rope S3 in the roller 30 can be adjusted in the circumferential direction of the winding member 3 with small intervals. However, the position adjustment mechanism 90 may also include a plurality of recesses provided on the winding member 3 and at least one protrusion provided on the outer cylinder member 35 of the roller 30 to engage with any one of the plurality of recesses.

[0079] Furthermore, in the sunshade device 1, the position adjustment mechanism 90 includes a plurality of protrusions 3p formed circumferentially spaced on the inner circumferential surface of the winding member 3 and a pair of recesses 35r formed at 180° intervals on the outer cylinder member 35 of the spool 30 to engage with any one of the plurality of protrusions 3p. Thus, the fixed position of the third rope S3 in the spool 30 can be adjusted circumferentially with small intervals, and the twisting of the outer cylinder member 35 of the spool 30 relative to the winding member 3 caused by the force of the torsion spring 65 from the third relaxation absorption mechanism 60 can be effectively suppressed. However, the position adjustment mechanism 90 may also include a pair of recesses formed at 180° intervals on the winding member 3 and a plurality of protrusions provided on the outer cylinder member 35 of the spool 30 to engage with the pair of recesses.

[0080] Furthermore, in the sunshade device 1, the power transmission mechanism T can be omitted from the rotary drive device 10, and the motor M can be directly connected to the second drum member 12. Alternatively, the rotary drive device 10 can also be configured such that the motor M drives the first drum member 11. Furthermore, the third rope S3 can also be wound up by the first drum member 11. Additionally, a spool (winding member) 30 can be coaxially fixed to each of the two ends of the winding member 3 along its axial direction. In this case, the third rope S3 fixed to one spool 30 can be wound up by the second drum member 12, and the fourth rope fixed to the other spool 30 can be wound up by the first drum member 11. Furthermore, the sunshade device 1 can be installed on the vehicle body F below the sunroof SR or a fixed transparent roof of the vehicle V, but is not limited to this; it can also be installed relative to the rear window or side window of the vehicle V.

[0081] [Summary of Implementation Methods]

[0082] The vehicle sunshade device 1 of this embodiment is provided relative to the roof Pm and Pf of a vehicle V, and includes a sunshade curtain 2, a retracting member 3 for retracting the sunshade curtain 2, a first roller member 11 rotatable about a first axis A1, a second roller member 12 rotatable about a second axis A2 extending parallel to the first axis A1, a first rope S1, a second rope S2, and a rotation drive device 10 for rotating the first roller member 11 about the first axis A1 and rotating the second roller member 12 about the second axis A2. The first rope S1 is connected to one end of the top portion of the sunshade curtain 2, and is retracted by the first roller member 11 when the first roller member 11 rotates in a predetermined first retracting direction. The second rope S2 is connected to the other end of the top portion of the sunshade curtain 2, and is retracted by the second roller member 12 when the second roller member 12 rotates in a predetermined second retracting direction. When the first drum component 11 is rotated in the first winding direction, the rotary drive device 10 rotates the second drum component 12 in the second winding direction. When the first drum component 11 is rotated in the opposite direction to the first winding direction, the rotary drive device 10 rotates the second drum component 12 in the opposite direction to the second winding direction.

[0083] In the vehicle sunshade device of this embodiment, a first rope is wound up by a first drum member, and a second rope is wound up by a second drum member that is separate from the first drum member. Therefore, it is easy to make the winding amount of the first rope based on the first drum member consistent with the winding amount of the second rope based on the second drum member, and it is also easy to make the delivery amount of the first rope based on the first drum member consistent with the delivery amount of the second rope based on the second drum member. Therefore, in the vehicle sunshade device of this embodiment, the sunshade can be moved appropriately.

[0084] Additionally, the vehicle sunshade device 1 may further include: a winding member 30, which is coaxial with and rotatable integrally with the take-up member 3; and a third rope S3, which is fixed to and wound around the winding member 30, and is wound by either a first drum member 11 or a second drum member 12 that rotates in a direction opposite to the first take-up direction or the second take-up direction.

[0085] When the first and second roller members are rotated in the first or second winding direction by the rotary drive device, and the first and second ropes are wound onto the first or second roller members, the top end of the sunshade is pulled away from the winding member by the first and second roller members. This allows the sunshade to be pulled out and closed from the winding member, and the winding member rotates in the opposite direction to the winding direction of the sunshade as the sunshade is pulled out, winding a third rope from one of the first and second roller members onto a winding member that rotates together with the winding member. Furthermore, when the first and second roller members are rotated in the opposite direction to the first or second winding direction by the rotary drive device, the first and second ropes are delivered from the first or second roller members, and the third rope is wound onto one of the first and second roller members. Thus, while allowing the top of the sunshade to move toward the retracting member by extending the first and second ropes, the winding member and the retracting member rotate in the retracting direction of the sunshade by retracting the third rope, thereby enabling the sunshade to be retracted onto the retracting member and opened.

[0086] Furthermore, one of the first and second roller members delivers the third rope while winding up the first or second rope, and winds up the third rope while delivering the first or second rope. Therefore, it is easy to make the winding amount of the first or second rope based on one of the first and second roller members consistent with the delivery amount of the third rope, and it is also easy to make the delivery amount of the first or second rope based on one of the first and second roller members consistent with the winding amount of the third rope. As a result, it is possible to suppress the movement of the top part of the sunshade relative to the winding member in an inclined state, and the sunshade can be moved (opened and closed) appropriately. In addition, when one of the first and second roller members is rotated, the first or second rope and the third rope can be prevented from interfering with each other, while one of the first or second rope and the third rope is delivered and the other is wound up simultaneously. This suppresses the increase in the axial length of one of the first and second roller members. Therefore, in such a vehicle sunshade device, it is possible to suppress the overall enlargement of the device and to move the sunshade appropriately.

[0087] Additionally, the first drum member 11 and the second drum member 12 may each have take-up grooves 111 and 121, respectively, which are formed on the outer peripheral surface in a spiral manner extending around the first axis A1 or the second axis A2. The second rope S2 may also be wound into the take-up groove 12 from one end side of the first drum member 11 and the second drum member 12 in the axial direction toward the other end side. The third rope S3 may also be wound into the take-up groove 121 from the other end side of the first drum member 11 and the second drum member 12 toward one end side.

[0088] Therefore, when the second drum component is rotated, the second and third ropes can be prevented from interfering with each other, while one of the second and third ropes is fed out of the take-up slot and the other is wound into the empty take-up slot. As a result, the increase in the axial length of the second drum component can be suppressed very well.

[0089] Furthermore, the first roll member 11 and the second roll member 12 can also be arranged in the width direction of the vehicle V.

[0090] Therefore, it is possible to suppress the increase in size of the sunshade device in the height direction and the pull-out direction of the sunshade curtain (the front-to-back direction of the vehicle), and to ensure the good fit of the sunshade device.

[0091] Additionally, a sunshade rod 4 with an internal space 4x can be fixed to the top of the sunshade curtain 2. A first rope S1 can be inserted into the internal space 4x from one end of the sunshade rod 4 and connected to the sunshade rod 4 via a first slack absorption mechanism 51, which absorbs any slack in the first rope S1. A second rope S2 can also be inserted into the internal space 4x from the other end of the sunshade rod 4 and connected to the sunshade rod 4 via a second slack absorption mechanism 52, which absorbs any slack in the second rope S2.

[0092] Therefore, even if at least one of the sunshade, the first rope, and the second rope elongates, slack can be suppressed in at least one of the first rope and the second rope, allowing the sunshade to be moved appropriately.

[0093] Furthermore, the invention disclosed herein is not limited to the embodiments described above, and various modifications can be made without departing from the scope of the invention, which is self-evident. Moreover, the above embodiments are merely one specific way of the invention described in the "Summary of Invention" section, and do not limit the elements of the invention described in the "Summary of Invention" section.

[0094] Industrial availability

[0095] The invention disclosed herein can be used in industries such as the manufacturing of vehicle sunshades.

Claims

1. A sunshade device for a vehicle, comprising a sunshade curtain and a winding member that winds the sunshade curtain, and is disposed with respect to a roof of the vehicle, wherein, have: A first drum component, which is freely rotatable about a first axis; A second spool component, which is rotatable about a second axis extending parallel to the first axis; A first rope is connected to one end of the top portion of the sunshade, and the first rope is wound up by the first roller member when the first roller member rotates in a predetermined first winding direction. A second rope, connected to the other end of the top portion of the sunshade, is wound up by the second roller member as the second roller member rotates in a predetermined second winding direction; and A rotary drive device that causes the first spool member to rotate about the first axis and the second spool member to rotate about the second axis. When the first spool member rotates in the first winding direction, the rotary drive device causes the second spool member to rotate in the second winding direction. When the first spool member rotates in the opposite direction to the first winding direction, the rotary drive device causes the second spool member to rotate in the opposite direction to the second winding direction.

2. The sunshade device for a vehicle according to claim 1, wherein It also has: A winding member that is coaxial with the take-up member and is capable of rotating integrally; as well as A third rope, which is fixed to and wound around the winding member, is wound by either the first winding member or the second winding member, which rotate in a direction opposite to the first winding direction or the second winding direction.

3. The vehicle sunshade device according to claim 2, wherein, The first and second spool components each have a take-up groove, which is formed on the outer peripheral surface in a spiral manner extending around the first or second axis. The second rope is wound into the take-up groove from one end of the first drum member and the second drum member in the axial direction toward the other end. The third rope is wound into the winding groove from the other end of one of the first and second drum components toward the first end.

4. The vehicle sunshade device according to any one of claims 1 to 3, wherein, The first roll member and the second roll member are arranged in the width direction of the vehicle.

5. The vehicle sunshade device according to any one of claims 1 to 3, wherein, A sunshade rod with an internal space is fixed to the top of the sunshade curtain. The first rope is inserted into the interior space from one end of the sunshade rod and is connected to the sunshade rod via a first slack absorption mechanism that absorbs slack in the first rope. The second rope is inserted into the interior space from the other end of the sunshade rod and is connected to the sunshade rod via a second slack absorption mechanism that absorbs the slack of the second rope.

Images