JP4574582B2 - Shading device - Google Patents

Description

  The present invention relates to a light shielding device for shielding external light with a light shielding sheet.

In the light shielding device disclosed in the following Patent Document 1 (referred to as a wind-up window cover device in Patent Document 1), a cylindrical small-diameter portion is attached to one axial end portion of the winding shaft, A large-diameter portion that is cylindrical and has a larger diameter than the small-diameter portion is attached to the other axial end of the winding shaft. For this reason, out of the mutually parallel sides of the sheet member (referred to as a cover in Patent Document 1), the longer one is wound on the large diameter portion side, and the shorter one is wound on the small diameter portion side. Finally, the leading end of the sheet member is aligned on one end side and the other end side in the axial direction of the winding shaft, and the sheet member can be wound and stored with good appearance.
JP-A-10-244841

  However, in such a light-shielding device, the sheet member cannot be aligned and stored unless the sheet member has a relatively simple shape such as a trapezoidal shape or a fan shape. In addition, the windshield glass of a vehicle that is curved three-dimensionally in consideration of air resistance and the like cannot be shielded without excess or deficiency.

  In view of the above facts, an object of the present invention is to obtain a light-shielding device that can shield light in a desired light-shielding state with a light-shielding sheet and that can store the light-shielding sheet in a good-looking manner.

  The light-shielding device according to the first aspect of the present invention includes a winding shaft that can rotate about its own axis, a base end portion locked to the winding shaft, and the winding shaft on one side around the axis. Is rotated and stored in a layered manner on the outer periphery of the take-up shaft from the base end side, and the other end side from the one end side in the width direction is within a predetermined range from the base end portion to the tip end portion. And a light-shielding sheet set to be thick.

  In the light-shielding device according to the first aspect of the present invention, when the winding shaft rotates to one side around the shaft, the light-shielding sheet is wound around the outer peripheral portion of the winding shaft from the base end side. In this state, when the take-up shaft further rotates to one side around the axis, the light-shielding sheet is further provided on the portion of the light-shielding sheet wound around the take-up shaft, that is, on the outer side of the outermost layer of the light-shielding sheet wound on the take-up shaft. It is wound up. Thus, every time the winding shaft makes one rotation around the axis, the distance from the axis of the winding shaft to the outer peripheral surface of the outermost light shielding sheet (hereinafter, for convenience, from the axis of the winding shaft to the outermost layer) The distance to the outer peripheral surface of the light shielding sheet is referred to as a “sheet winding radius”), which is increased by the thickness of the light shielding sheet. The winding amount of the light shielding sheet per one rotation of the winding shaft is the circumference of the outer peripheral surface of the outermost light shielding sheet (hereinafter, for convenience, the circumference of the outer peripheral surface of the light shielding sheet of the outermost layer is referred to as “sheet winding circumferential length”. Naturally, the larger the sheet winding peripheral length, the larger the winding amount of the light shielding sheet per one rotation of the winding shaft.

  Here, in the light shielding device according to the present invention, the other end side is thicker than the one end side in the width direction of the light shielding sheet in a predetermined range between the base end portion and the distal end portion of the light shielding sheet. For this reason, when the predetermined range is wound around the winding shaft, the sheet winding radius on the other end in the width direction is larger than the sheet winding radius on the one end in the width direction of the light shielding sheet. Thus, the sheet winding peripheral length at the other end in the width direction is longer than the sheet winding peripheral length at one end in the width direction of the light shielding sheet. Therefore, after the winding shaft winds up the predetermined range, the winding amount of the light shielding sheet per one rotation of the winding shaft is larger on the other end side than on the one end side in the width direction. As a result, even if the length from the base end portion to the tip end portion of the light shielding sheet is different between the one end side and the other end side in the width direction, the light shielding sheet can be satisfactorily used as a winding shaft without causing unwinding of the light shielding sheet. Can be wound and stored.

  In addition, by making the other end in the width direction thick in the predetermined range of the light shielding sheet in this way, the length of the light shielding sheet along the direction from the base end side to the front end side in the predetermined range is set to one end side in the width direction. It can be longer on the other end side. As a result, even if the portion covered by the light shielding sheet has a three-dimensionally curved structure, it is possible to appropriately set a range in which the other end in the width direction is thick on the light shielding sheet (for example, without excess or deficiency). ) Can be shielded by a light shielding sheet.

  According to a second aspect of the present invention, there is provided a light-shielding device according to a second aspect of the present invention, wherein a wind-up device is provided inside a garnish provided in a vehicle compartment so as to be rotatable about an axis whose axial direction is a direction corresponding to the longitudinal direction of the garnish. The shaft and the base end are locked to the winding shaft, and the winding shaft rotates around one axis so that the winding shaft is wound in layers on the outer periphery of the winding shaft from the base end side and stored. And the front end side is pulled out to the outside of the garnish, so that the light shielding sheet that is unfolded on the indoor side of the glass that partitions the vehicle interior and the exterior on the side of the garnish and blocks the light transmitted through the glass, Any of the light shielding sheets along the axial direction of the take-up shaft within a predetermined range between the base end portion and the tip end portion of the light shielding sheet corresponding to the shape of the glass facing the unfolded state of the light shielding sheet. Formed on one side of Serial than either of the other side has and a thick thick portion.

  In the light-shielding device according to the second aspect of the present invention, when the light-shielding sheet wound around the take-up shaft and housed inside the garnish is pulled and deployed on the interior side of the vehicle glass, the glass is transmitted. The light is blocked by the light shielding sheet, thereby reducing external light such as sunlight from entering the vehicle compartment.

  On the other hand, when the winding shaft rotates to one side around the shaft, the light shielding sheet is wound around the outer periphery of the winding shaft from the base end side. In this state, when the take-up shaft further rotates to one side around the axis, the light-shielding sheet is further provided on the portion of the light-shielding sheet wound around the take-up shaft, that is, on the outer side of the outermost layer of the light-shielding sheet wound on the take-up shaft. It is wound up. Thus, every time the winding shaft makes one rotation around the axis, the distance from the axis of the winding shaft to the outer peripheral surface of the outermost light shielding sheet (hereinafter, for convenience, from the axis of the winding shaft to the outermost layer) The distance to the outer peripheral surface of the light shielding sheet is referred to as a “sheet winding radius”), which is increased by the thickness of the light shielding sheet. The winding amount of the light shielding sheet per one rotation of the winding shaft is the circumference of the outer peripheral surface of the outermost light shielding sheet (hereinafter, for convenience, the circumference of the outer peripheral surface of the light shielding sheet of the outermost layer is referred to as “sheet winding circumferential length”. Naturally, the larger the sheet winding peripheral length, the larger the winding amount of the light shielding sheet per one rotation of the winding shaft.

  Here, in the light shielding device according to the present invention, the other end side is thicker than the one end side in the width direction of the light shielding sheet in a predetermined range between the base end portion and the distal end portion of the light shielding sheet. For this reason, when the predetermined range is wound around the winding shaft, the sheet winding radius on the other end in the width direction is larger than the sheet winding radius on the one end in the width direction of the light shielding sheet. Thus, the sheet winding peripheral length at the other end in the width direction is longer than the sheet winding peripheral length at one end in the width direction of the light shielding sheet. Therefore, after the winding shaft winds up the predetermined range, the winding amount of the light shielding sheet per one rotation of the winding shaft is larger on the other end side than on the one end side in the width direction. As a result, even if the length from the base end portion to the tip end portion of the light shielding sheet is different between the one end side and the other end side in the width direction, the light shielding sheet can be satisfactorily used as a winding shaft without causing unwinding of the light shielding sheet. Can be wound and stored.

  Moreover, the length of the light shielding sheet along the direction from the base end side to the tip end side in the predetermined range corresponding to the shape of the glass by thickening the other end in the width direction in the predetermined range of the light shielding sheet in this way. Can be made longer at the other end than at one end in the width direction. As a result, even if the surface of the vehicle interior side of the glass is curved in a three-dimensional manner, a desired state (for example, excess or deficiency) can be set by appropriately setting a range in which the other end in the width direction is thick on the light shielding sheet. None) Can be shielded by a light shielding sheet.

  A light shielding device according to a third aspect of the present invention is the light shielding device according to the first or second aspect, wherein the light shielding sheet is oriented in the direction from the base end side to the front end side and in the thickness direction of the light shielding sheet. A groove portion that is elongated along the direction intersecting the two is formed in the thick portion.

  In the light-shielding device according to the third aspect of the present invention, the direction that intersects both the direction from the base end side to the front-end side of the light-shielding sheet and the thickness direction of the light-shielding sheet (for example, the width direction of the light-shielding sheet) A groove portion elongated along the line is formed in the thick portion. For this reason, when the winding shaft winds up the portion where the thick portion of the light shielding sheet is provided, one side of the thick portion via the groove portion along the direction from the proximal end side to the distal end side of the light shielding sheet The other side approaches or separates from each other as appropriate in accordance with the curvature of the light shielding sheet caused by winding the winding shaft. Thereby, when the light shielding sheet is wound around the winding shaft, it is possible to prevent wrinkles on the light shielding sheet, and it is possible to satisfactorily wind up and store the light shielding sheet.

  In addition, in this invention, the groove part should just be formed as a result in the step which provided the thick part in the light shielding sheet. That is, it is good also as a structure which affixes the thick part in which the groove part was formed previously to the light-shielding sheet, and is along the direction from the base end side of the light-shielding sheet to the front end side. It is also possible to provide the light shielding sheet intermittently and use the gap between adjacent strips as a groove.

  A light-shielding device according to a fourth aspect of the present invention is the light-shielding device according to any one of the first to third aspects, wherein the other end is larger than the outer diameter dimension at one end side in the axial direction of the winding shaft. The winding shaft is formed in a truncated cone shape having a large outer diameter on the side, and the winding amount of the light-shielding sheet per rotation of the winding shaft is set to the other end of the winding shaft from one end side in the axial direction. It is characterized by a longer side.

  In the light-shielding device according to the fourth aspect of the present invention, the winding shaft has a truncated cone shape, and the winding amount of the light-shielding sheet per rotation of the winding shaft is one end side in the axial direction of the winding shaft. It is longer on the other end side. For this reason, in this light-shielding device, the length of the light-shielding sheet wound from the start to the end of winding of the light-shielding sheet by the winding shaft is longer on the other end side than the one end side in the axial direction of the winding shaft. Thereby, for example, in the configuration where the portion shielded by the light shielding sheet is longer on the other end side than the one end side in the axial direction of the take-up shaft, the thickness of the thick portion can be reduced, and the light shielding sheet is expanded. Appearance is improved.

  As described above, in the light-shielding device according to the present invention, the light-shielding sheet can shield light in a desired light-shielding state, and the front-end side of the light-shielding sheet protrudes, and unnecessary wrinkles are caused on the light-shielding sheet. Therefore, the light shielding sheet can be wound around the winding shaft, and the appearance in the stored state can be improved.

<Configuration of the present embodiment>
FIG. 3 is a front view showing the interior of a vehicle 12 equipped with a pair of left and right light shielding devices 10 according to an embodiment of the present invention.

  As shown in this figure, the light shielding device 10 includes a storage case 16 disposed inside a front pillar garnish 14 that is one embodiment of a garnish of a vehicle 12. As shown in FIG. 4, the storage case 16 is formed in a hollow cylindrical shape that is appropriately inclined along the front pillar garnish 14 substantially in the vehicle front-rear direction and in the vehicle left-right direction with respect to the vehicle vertical direction. Both ends of the shaft 18 that is substantially parallel to the storage case 16 are rotatably supported at both ends in the axial direction of the storage case 16. Spools 20 as winding shafts are provided on the intermediate side of both ends of the shaft 18 in the axial direction.

  The spool 20 includes a cylindrical spool body 22 having both axial ends open. Both ends of the spool body 22 in the axial direction are closed by connecting lids 24. The shaft 18 is integrally connected to the spool body 22 via the connecting lid 24 in a state where the shaft 18 passes through the axial center portion of the spool 20.

  Further, a winding spring 26 is provided between the shaft support portion of the shaft 18 on one end side of the storage case 16 and the connecting lid 24 on one end side of the storage case 16. The winding spring 26 is a so-called “spring spring”. The outer end of the winding spring 26 in the spiral direction is locked to a predetermined portion of the storage case 16, and the inner end of the winding spring 26 in the spiral direction is locked to the light shielding sheet 28. ing. When the shaft 18 is rotated in a pulling direction which is one of its axes, the winding spring 26 is tightened so that the number of windings increases, and the urging force of the winding spring 26 is increased according to the increase in the number of windings. Gradually increases.

  On the other hand, as shown in FIG. 3, the light shielding device 10 includes a light shielding sheet 28. The light shielding sheet 28 is formed in a flexible sheet shape whose width direction is along the longitudinal direction of the shaft 18, and its longitudinal direction base end side passes through a slit hole (not shown) formed in the front pillar garnish 14. Then, the inside of the storage case 16 enters, and the base end in the longitudinal direction is locked to the spool body 22 inside the storage case 16. When the spool 20 rotates in the winding direction together with the shaft 18, the light shielding sheet 28 is wound and stored in layers on the spool body 22 from the proximal end side in the longitudinal direction, as shown in FIG. 4.

  As shown in FIGS. 3 and 4, an arm 30 is attached to the front end of the light shielding sheet 28 in the longitudinal direction. The arm 30 is formed in a long bar shape along one longitudinal end portion of the light shielding sheet 28, and a guide piece 32 is attached to one end (upper end) thereof. Corresponding to the guide piece 32, a guide rail 34 is provided in the vehicle 12.

  The guide rail 34 is attached to the ceiling portion 38 of the vehicle 12 so as to be along the upper end portion of the windshield glass 36 that is one mode of the glass of the vehicle 12. As shown in FIG. 4, the guide rail 34 is formed in a hollow shape, and the inside and outside of the guide rail 34 communicate with each other by a guide groove 40 that is continuous along the longitudinal direction thereof. A retaining portion 42 of the guide piece 32 enters inside the guide rail 34, and the retaining portion 42 is guided by the guide rail 34 and moves along the longitudinal direction of the guide rail 34, that is, along the upper end portion of the windshield glass 36. To do.

  On the other hand, as shown in FIG. 3, a holding mechanism 44 is fixed to the windshield glass 36 or the ceiling portion 38 in the vicinity of a substantially central portion in the longitudinal direction of the guide rail 34. As shown in FIGS. 3 and 5, the holding mechanism 44 includes a box-shaped housing 46. As shown in FIG. 5, a pair of guide walls 48 are provided on the inner side of the housing 46 so as to face each other substantially along the left-right direction of the vehicle. A release button 50 is disposed between the pair of guide walls 48. The release button 50 is formed in a block shape, and can slide within a predetermined range in the height direction of the housing 46 along the guide wall 48. An opening 54 is formed in the bottom wall 52 of the housing 46 corresponding to the release button 50, and the release button 50 can be pressed from the outside of the housing 46 upward in the height direction of the housing 46.

  A compression coil spring 56 is disposed between the pair of guide walls 48. The compression coil spring 56 is disposed between the upper wall 58 of the housing 46 facing the bottom wall 52 and the release button 50 and urges the release button 50 toward the opening 54. Further, a slider 62 is accommodated between the side wall 60 and the guide wall 48 of the housing 46 on the substantially lateral side of the vehicle. The slider 62 is guided by the guide wall 48 and the side wall 60 and can slide within a predetermined range in the height direction of the housing 46.

  A compression coil spring 64 is disposed between the slider 62 and the bottom wall 52, and the slider 62 is biased upward in the height direction of the housing 46 by the compression coil spring 64. Further, an opening 66 is formed in the upper wall 58 so as to face the slider 62, and when the slider 62 slides to the upper wall 58 side by the biasing force of the compression coil spring 64, the end on the upper wall 58 side of the slider 62 is formed. A holding claw 68 formed on the portion passes through the opening 66 and protrudes to the outside of the housing 46.

  The holding claw 68 corresponds to a through-hole 72 formed in the plate portion 70 of the guide piece 32, and the through-hole 72 is in a state where the arm 30 reaches a substantially central portion of the windshield glass 36 substantially along the vehicle left-right direction. When the is opposed to the opening 66, the holding claw 68 protruding from the opening 66 can enter the through-hole 72. Thus, in the state where the holding claw 68 enters the through hole 72, when the arm 30 tries to move to the front pillar garnish 14 side, the inner peripheral portion of the through hole 72 is interfered with the holding claw 68 and the front pillar garnish 14. Movement of the arm 30 to the side is restricted.

  Further, a support shaft 74 is formed to project from one side surface of the slider 62 facing in a direction orthogonal to both the opposing direction of the side walls 60 and the opposing direction of the upper wall 58 and the bottom wall 52. One end of an arm 76 is pivotally supported on the support shaft 74 so as to be rotatable around the support shaft 74. The other end side of the arm 76 passes through a window portion 78 formed in the guide wall 48 and enters a space between the guide walls 48.

  Engagement pins 80 project from the side surface of the release button 50 facing the same direction as the side surface on which the support shaft 74 of the slider 62 is formed, corresponding to the other end side of the window portion 78. The engaging pin 80 is inserted into a curved long hole 82 formed on the other end side of the first pin. As a result, the release button 50 and both sliders 62 are mechanically connected via the arm 76, and when the release button 50 slides to the upper wall 58 side, the slider 62 moves to the bottom wall 52 side in conjunction with the release button 50. It has a sliding structure.

  In the present embodiment, as described above, the movement of the arm 30 toward the front pillar garnish 14 is restricted by the holding claws 68 entering the through holes 72. In this state, as shown in FIG. A light shielding sheet 28 is developed between a substantially central portion of the windshield glass 36 along the vehicle left-right direction and the front pillar garnish 14. The outer peripheral shape of the portion of the light shielding sheet 28 that is unfolded and protrudes to the outside of the front pillar garnish 14 is between the substantially central portion of the windshield glass 36 along the substantially horizontal direction and the end portion on the front pillar garnish 14 side. Corresponds to the outer shape.

  Thus, by forming the outer peripheral shape of the light shielding sheet 28 corresponding to the outer peripheral shape of the windshield glass 36, as shown in FIGS. 1 and 2, the width direction upper end and the width direction lower end of the light shielding sheet 28 are obtained. Is appropriately curved. Moreover, the upper end and the lower end of the windshield glass 36 formed so as to be curved three-dimensionally according to the design of the vehicle 12 correspond to the upper end in the width direction and the lower end in the width direction of the light shielding sheet 28, respectively. Thus, the longitudinal dimensions of the light shielding sheet 28 along the width direction upper end portion and the width direction lower end portion thereof are different, and further, the curvature curvature of the light shielding sheet 28 is appropriately different between the width direction upper end portion and the width direction lower end portion. .

  Here, as shown in FIGS. 1 and 2, edge difference length absorbing portions 84 and 86 are set at predetermined positions between both ends in the longitudinal direction of the light shielding sheet 28. The edge difference length absorbing portions 84 and 86 are set in a substantially trapezoidal shape or a substantially fan shape with the other being longer than either one of the upper end in the width direction and the lower end in the width direction of the light shielding sheet 28, and the upper end side and the width in the width direction. A thick portion 94 is continuously formed along the longitudinal direction of the light shielding sheet 28 on the longer side on the lower side in the direction. The thick portion 94 is thicker than the other portions of the light shielding sheet 28. The thickness dimension of the light shielding sheet 28 in the thick portion 94 is set based on the difference between the longer dimension and the shorter dimension in the width direction upper end side and the width direction lower end side in the edge difference length absorbing section 84. Has been.

  Further, this point will be described in detail. The winding length of the light shielding sheet 28 wound around the spool 20 when the spool 20 makes one rotation (that is, the longitudinal dimension of the light shielding sheet 28; (Referred to as “sheet winding peripheral length”) is a length from the axial center of the spool 20 to the outer peripheral surface of the light shielding sheet 28 already wound on the spool 20 (hereinafter, this length is referred to as “ The sheet winding peripheral length becomes larger (longer) as the sheet winding radius becomes larger.

  Further, the thicker the light shielding sheet 28, the larger the sheet winding radius that is increased every time the spool 20 rotates once. Based on these matters, the end portions 84A and 86A of the edge difference length absorbing portions 84 and 86 on the base end side (spool 20 side) in the longitudinal direction of the light shielding sheet 28 reach the outer peripheral portion of the spool 20, and this state When the winding of the edge difference length absorbing portions 84 and 86 from the spool 20 to the spool 20 is finished, the edge portions 84B of the edge difference length absorbing portions 84 and 86 on the front end side in the longitudinal direction (arm 30 side) of the light shielding sheet 28 are completed. , 86B are set to be parallel to the axial center of the spool 20, and the thickness of the thick portion 94 is set.

<Operation and effect of the present embodiment>
Next, the operation and effect of the present embodiment will be described.

  In the light-shielding device 10 having the above-described configuration, when the arm 30 is pulled substantially in the center in the left-right direction of the vehicle against the urging force of the winding spring 26, the retaining portion 42 of the guide piece 32 moves while being guided by the arm 30. As a result, the light shielding sheet 28 wound and accommodated on the spool 20 is pulled out from the front end side (arm 30 side). When the arm 30 is pulled in this manner, when the arm 30 reaches the substantially central portion of the windshield glass 36 substantially along the left-right direction of the vehicle, the end portion of the plate portion 70 formed on the guide piece 32 becomes the compression coil. The inclined surface of the holding claw 68 protruding from the opening 66 is pressed against the urging force of the springs 56 and 64, and the holding claw 68 and thus the slider 62 are pushed down as shown in FIG.

  In this state, when the plate portion 70 further moves substantially in the vehicle lateral direction center side and the through hole 72 formed in the plate portion 70 faces the opening 66, the pressing force from the plate portion 70 is eliminated and the compression coil is released. The release button 50 slides downward by the urging force of the springs 56 and 64, and the holding claw 68 enters the through hole 72. As described above, the movement of the arm 30 substantially toward the center in the left-right direction of the vehicle resists the urging force of the take-up spring 26, but the holding pawl 68 enters the through-hole 72 and moves toward the front pillar garnish 14 side. The movement of the guide piece 32 and consequently the movement of the arm 30 are restricted, and the light shielding sheet 28 is held in a state where it is unfolded on the front pillar garnish 14 side from the substantially central portion of the windshield glass 36 along the vehicle lateral direction. The

  In this way, the arm 30 is pulled from both the left and right sides of the vehicle 12, and both the arms 30 are arranged adjacent to each other (preferably further parallel to each other) at a substantially central portion of the windshield glass 36 substantially along the vehicle left-right direction. The light shielding sheet 28 is unfolded until the light shielding sheet 28 faces the indoor side surface of the windshield glass 36. As a result, outside light such as sunlight passing through the windshield glass 36 is blocked by the light shielding sheet 28. For example, the temperature inside the vehicle 12 due to the sunlight entering the room inside the vehicle 12 in summer or the like. Can be suppressed.

  Here, in the light shielding device 10, the windshield glass 36 that is three-dimensionally curved corresponds to the outer peripheral shape from the substantially central portion along the vehicle left-right direction to the end portion on the front pillar garnish 14 side, The upper end in the width direction and the lower end in the width direction of the light shielding sheet 28 are appropriately curved. Therefore, in the light shielding device 10, the light shielding sheets 28 of the left and right light shielding devices 10 face substantially the entire area of the indoor surface of the windshield glass 36 in a state where the light shielding sheets 28 are unfolded. Thereby, the light which passes outside the outer peripheral part of the light shielding sheet 28 and enters the vehicle 12 can be reduced (that is, extremely high light shielding performance can be obtained).

  On the other hand, when the release button 50 is pushed up against the urging force of the compression coil springs 56 and 64 in the unfolded state of the light shielding sheet 28 as described above, the slider 62 slides downward, thereby causing the holding claw 68 to be transparent. Exit from hole 72. When the interference by the holding claws 68 with respect to the inner peripheral portion of the through hole 72 is eliminated, the shaft 18 is rotated in the winding direction by the urging force of the winding spring 26. In this way, the shaft 18 rotates in the winding direction, whereby the light shielding sheet 28 is wound and stored on the outer peripheral portion of the spool body 22 (spool 20) from the base end side in the longitudinal direction.

  By the way, as described above, the light shielding sheet 28 is appropriately curved at the upper end and the lower end in the width direction corresponding to the outer peripheral shape of the three-dimensionally curved windshield glass 36, and further, the upper end and the lower end in the width direction. And the longitudinal dimension differs. Here, as shown in FIGS. 1 and 2, as described above, in the light shielding device 10, the edge difference length absorbing portions 84 and 86 are provided in the light shielding sheet 28 according to the outer peripheral shape of the windshield glass 36. In these edge difference length absorbing portions 84 and 86, a thick portion 94 is formed on the upper end side or the lower end side in the width direction. For this reason, when the light shielding sheet 28 is wound around the spool body 22 after the end portions 84A and 86A of the edge difference length absorbing portions 84 and 86 have reached the outer peripheral portion of the spool body 22, the width of the light shielding sheet 28 is increased. The sheet winding radius gradually increases in the direction in which the thick portion 94 is formed, compared to the direction in which the thick portion 94 is not formed, on the both ends in the direction, and accordingly, the winding peripheral length is reduced by the thick portion 94. It becomes longer when the thick portion 94 is formed than when it is not formed.

  Therefore, as described above, in order to correspond to the outer peripheral shape of the windshield glass 36 that is curved three-dimensionally, either one of the upper end portion and the lower end portion in the width direction of the edge difference length absorbing portions 84 and 86 is attached. Even if it is formed longer than the other side, when the end portions 84B and 86B of the edge difference length absorbing portions 84 and 86 face the portion wound around the spool body 22 of the light shielding sheet 28, that is, the end portions of the light shielding sheet 28. When winding on the tip side of 84B and 86B is started, the end portions 84B and 86B are parallel to the shaft 18 (the axis of the spool 20), and the winding of the light shielding sheet 28 is completed. Then, the light shielding sheet 28 is wound up and stored well without the light shielding sheet 28 protruding from the front pillar garnish 14 and unnecessarily wrinkling the light shielding sheet 28. As a result, the light-shielding sheet 28 looks good in the housed state, and the light-shielding sheet 28 can be pulled out smoothly because unnecessary shading is not caused in the state where the light-shielding sheet 28 is wound up. Further, the appearance of the light shielding sheet 28 in the developed state is improved.

  In the present embodiment, the three edge difference length absorbing portions 84 and 86 are formed on the light shielding sheet 28, and the edge difference length absorbing portions 84 and 86 are continuously formed. The number of the edge difference length absorbing portions 84 (edge edge difference length absorbing portions 86) may be one or plural, and furthermore, the entire light shielding sheet 28 is connected to the edge difference length absorbing portion 84 (edge edge). The difference length absorbing portion 86) may be used. Further, the edge difference length absorbing portion 84 (edge difference length absorbing portion 86) is intermittently formed without continuously forming the plurality of edge difference length absorbing portions 84 (edge difference length absorbing portion 86). May be.

  In the present embodiment, the light shielding sheet 28 is wound around the spool body 22 by the urging force of the winding spring 26. However, the structure for rotating the light shielding sheet 28 in the winding direction is the winding spring 26. For example, a dial or the like that is coaxially connected to the shaft 18 or indirectly connected to the shaft 18 via one or more gears, and at least a part thereof is exposed to the outside of the front pillar garnish 14. The rotation operation means may be rotated to rotate the shaft 18 in the winding direction, or the shaft 18 may be rotated in the winding direction by a driving force of a driving means such as a motor.

  Furthermore, the configuration of the above embodiment may further include a shape holding unit that holds a predetermined developed shape in a state where the light shielding sheet 28 is developed. The specific configuration of the shape holding means is not particularly limited, but as an example, the configuration is such that the upper end in the width direction of the light shielding sheet 28 enters the guide rail 34 from the guide groove 40, and the width of the light shielding sheet 28. Since the upper end in the direction surely follows the guide rail 34, the light shielding sheet 28 may be surely along the upper end of the windshield glass 36 in the width direction upper end side.

  In addition to this configuration, for example, a holding member such as a long wire that can be bent so as to be wound around the spool body 22 together with the light shielding sheet 28 is attached to the upper end portion of the light shielding sheet 28. It is good also as a structure which hold | maintains the light shielding sheet 28 by a predetermined | prescribed expansion | deployment shape with the tension | tensile_strength (or elastic force) of a holding member. Furthermore, when the guide rail 34 as described above is provided along the lower end portion of the windshield glass 36 or the holding member is provided at the lower end portion in the width direction of the light shielding sheet 28, the light shielding sheet. The light shielding sheet 28 can be held in a predetermined developed shape on the lower end side in the width direction 28.

  Further, in the present embodiment, as described above, the longer length along the longitudinal direction of the light shielding sheet 28 among the upper end side or the lower end side in the width direction of the light shielding sheet 28 in the edge difference length absorbing portions 84 and 86. The thick portion 94 is formed on the upper side or the lower end in the width direction of the light shielding sheet 28 in the edge difference length absorbing portions 84 and 86 instead of forming the thick portion 94 or forming the thick portion 94. It is good also as a structure which forms a thin part thinner than the other site | part of the light shielding sheet 28 in the one where the length along the longitudinal direction of the light shielding sheet 28 is short. In the case where such a thin portion is formed on one end in the width direction of the light shielding sheet 28, the other end in the width direction of the light shielding sheet 28 where the relatively thin portion is not formed is a thick portion.

  In the present embodiment, the spool body 22 has a cylindrical shape with the same outer diameter on one end side and the other end side. For example, as shown in FIG. The size may be a truncated cone shape smaller than the outer diameter size at the other end side, and the winding circumference per rotation may be differentiated in advance between the one axial end side and the other end side of the spool body 22.

  For example, when the length of the windshield glass 36 on the other end side of the spool body 22 is sufficiently longer than the length of the windshield glass 36 on one end side of the spool body 22, the truncated cone as described above is used. By forming the spool body 22 in the shape, the winding circumferential length from when the spool body 22 starts winding the light shielding sheet 28 to when it finishes is basically the other end than the one end side of the spool body 22. Get longer on the side.

  For this reason, by forming the spool body 22 in the shape of a truncated cone, the thick wall portion 94 has a length locally at one end side and the other end side in the axial direction of the spool body 22 such as a curved portion of the windshield glass 36. It is only necessary to provide portions corresponding to different portions, and the formation range of the thick portion 94 can be made smaller and the thick portion 94 can be made thinner than the configuration in which the spool main body 22 is cylindrical. Thereby, even if the thick part 94 is formed, the appearance of the light shielding sheet 28 can be improved.

  Further, although the light shielding device 10 according to the present embodiment is applied to the windshield glass 36 (that is, the windshield) of the vehicle 12, the light shielding device 10 is applied to other parts such as the rear glass of the vehicle 12. May be.

  In the present embodiment, the thick portion 94 is continuously formed along the longitudinal direction of the light shielding sheet 28 (that is, along the direction from the proximal end side to the distal end side of the light shielding sheet 28). For example, as shown in FIG. 8 and FIG. 9, the light shielding sheet 28 is elongated along the width direction (or, if the thick portion 94 is fan-shaped, it is elongated along the direction of the radius of curvature). Are formed along the longitudinal direction of the light shielding sheet 28 so as to be long (or thick) along the width direction of the light shielding sheet 28 between the adjacent thick portions 94. If the portion 94 is fan-shaped, a groove portion 102 having a length along the direction of the radius of curvature may be formed.

  In the case of such a configuration, the adjacent thick portions 94 are separated from each other or approached via the groove portion 102 according to the curvature generated by winding the light shielding sheet 28 around the spool body 22. Thereby, even if the thick portion 94 is provided, the light shielding sheet 28 can be prevented from wrinkling or extremely effectively suppressed, and the light shielding sheet 28 can be wound up and stored satisfactorily.

  Also, for example, as shown in FIGS. 10 and 11, a thick portion 94 is configured by a plurality of strip strips 104 each having a narrow width, and these strip strips 104 are arranged along the widthwise end of the light shielding sheet 28. It may be configured to be provided at predetermined intervals. Even in such a configuration, the gap between adjacent strips 104 becomes the groove portion 102, and the same effect as the configuration in which the plurality of groove portions 102 are formed in one thick portion 94 can be obtained, and the same effect can be obtained. it can.

It is the schematic perspective view which expanded the principal part of the light-shielding apparatus which concerns on one embodiment of this invention. It is the schematic front view which expanded the principal part of the light-shielding apparatus which concerns on one embodiment of this invention. 1 is a schematic front view of a vehicle interior to which a light shielding device according to an embodiment of the present invention is applied. It is front sectional drawing of the light-shielding apparatus which expanded the winding shaft and its vicinity. It is sectional drawing which shows the structure of the holding mechanism which hold | maintains a front-end | tip part indirectly in the expansion | deployment state of a light shielding sheet. It is sectional drawing corresponding to FIG. 5 which shows the state which the holding nail | claw fell. It is a perspective view which shows the modification which made the winding shaft the truncated cone shape. It is a perspective view which shows the modification of a thick part. It is sectional drawing which shows the modification of a thick part. It is a perspective view which shows the other modification of a thick part. It is sectional drawing which shows the other modification of a thick part.

Explanation of symbols

10 Shading device 12 Vehicle 14 Front pillar garnish (garnish)
20 Spool (winding shaft)
28 Light-shielding sheet 36 Windshield glass (glass)
94 Thick part 102 Groove part

Claims (4)

A winding shaft that can rotate around its own axis;
The base end is locked to the winding shaft, and the winding shaft is rotated around one axis so that the winding shaft rotates and is wound around the outer periphery of the winding shaft in a layered manner and stored. A light-shielding sheet in which the other end side is set thicker than the one end side in the width direction in a predetermined range between the base end part and the tip part;
A shading device. A take-up shaft which is provided inside the garnish provided in the vehicle compartment so as to be rotatable around an axis whose direction is the direction corresponding to the longitudinal direction of the garnish;
The base end is locked to the winding shaft, and the winding shaft is rotated around one axis so that the winding shaft rotates and is wound around the outer periphery of the winding shaft in a layered manner and stored. A light-blocking sheet that is unfolded on the indoor side of the glass that partitions the interior and exterior of the vehicle on the side of the garnish and blocks the light that has passed through the glass, with the distal end being pulled out of the garnish;
Any of the light shielding sheets along the axial direction of the take-up shaft within a predetermined range between the base end portion and the tip end portion of the light shielding sheet corresponding to the shape of the glass facing the unfolded state of the light shielding sheet. A thick part thicker than any of the other side formed on one side of,
A shading device.   A groove portion that is elongated along the direction intersecting both the direction from the base end side to the front end side of the light shielding sheet and the thickness direction of the light shielding sheet is formed in the thick portion. The light-shielding device according to claim 2.   The winding shaft is formed in a truncated cone shape having an outer diameter dimension on the other end side larger than an outer diameter dimension on one end side in the axial direction of the winding shaft, and the light shielding sheet is wound per one rotation of the winding shaft. The shading device according to any one of claims 1 to 3, wherein a take-up amount is longer on the other end side than on one end side in the axial direction of the winding shaft.

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