JP4649377B2 - Vehicle ceiling blind system - Google Patents

Description

  The present invention relates to a skylight blind provided in a ceiling portion of a vehicle such as a passenger car.

  A structure in which a skylight is provided on the ceiling of a passenger car is known. In general, the ceiling provided with the skylight is called a panoramic roof. The skylight is provided with an openable / closable blind (shade) so that light from the skylight does not enter the vehicle when sunlight is strong or dazzling. As the open / close blind, a slide type is generally used in which a plate-like one is slid along the ceiling surface. However, since the sliding blind needs to secure its own storage space, there is a problem that the aperture ratio of the skylight (the ratio of the skylight area to the ceiling area) is limited.

As a device for increasing the aperture ratio of the skylight, a structure has been proposed in which the blind is made flexible like a cloth and is wound and stored (see, for example, Patent Document 1). Such a blind made of a flexible material has a problem of slackness, and therefore needs to be stretched by some method. In Patent Document 1, the edge in the width direction of the blind has a reinforcing structure, and when the drawer is pulled out, the reinforcing portion is bent in the vertical direction and engaged with the guide portions provided on both sides of the ceiling, thereby extending the tension in the width direction. The configuration to be secured is described.

JP 2000-190733 A (abstract)

  The configuration described in Patent Document 1 can ensure the tension in the width direction, but the edge portion in the width direction of the blind is a reinforcing structure, so that the thickness of the portion is increased. Therefore, a winding diameter becomes large when it winds up. In addition, when a multi-layered blind is used, or when the blind covers a skylight with a large aperture ratio, the winding diameter of the blind increases. A vehicle, particularly a passenger car, has a low ceiling height and a thin ceiling structure. Therefore, if the winding diameter of the blind is large, the shape of the vehicle body near the storage portion of the blind becomes distorted and the design is deteriorated. Alternatively, the interior space becomes narrower. That is, as shown in FIG. 4A, if the winding diameter of the blind 501 in a wound state is small, the influence on the design of the surface shape 502 of the ceiling portion in the vicinity of the blind storage portion is small. However, when the winding diameter is increased, it is necessary to match the shape of the blind 501 with the surface shape 502 wound up, as shown in FIG. It is desirable that the winding diameter of the blind is as small as possible. In this respect, the technique described in Patent Document 1 is disadvantageous.

  Accordingly, the present invention provides a retractable blind structure disposed in a skylight portion provided on a roof portion of a vehicle, and can provide tension in the width direction of the blind when it is pulled out and It aims at providing the structure which can make a diameter small.

Blind system ceiling for a vehicle of the present invention, a sheet-like blind, a winding shaft for winding the blind while rotating, and a guided portion provided in the width direction of the edge of the blind, engaged with the guided portion A guide portion to be joined, and a support portion that is provided on the ceiling portion of the vehicle body and supports the take-up shaft, and the take-up shaft is supported by the support portion by a screw provided at an end thereof, The take-up shaft has a female screw that meshes with the screw, and the take-up shaft moves parallel to the axial direction simultaneously with the rotation when the screw and the female screw mesh with each other.

  According to this configuration, when the blind is wound on the winding shaft, the edge in the width direction of the blind is wound in a spiral shape, and thus does not overlap at the same position. For this reason, it can suppress that a to-be-guided part does not overlap up and down in the state wound up, and the winding diameter increases in the part. In addition, since the adverse effect of the overlap at the time of winding is reduced, a structure that reliably engages the guide portion (that is, a structure that allows thickness and prioritizes reliable engagement) can be obtained. Therefore, when the blind is pulled out and deployed, the tension in the width direction of the blind can be surely given.

  In the above configuration, the winding shaft preferably has a reduced diameter structure. According to this aspect, the portion of the take-up shaft on which the guided portion is wound has a reduced-diameter structure that reduces the diameter. Swelling is suppressed. For this reason, the increase in the winding diameter in the vicinity of the guided portion can be further effectively suppressed. Examples of the reduced diameter structure include a tapered shape or a stepped shape in which the diameter decreases toward the end. Further, examples of the reduced diameter structure include a structure in which the diameter is once reduced toward the end portion, and the diameter is increased in a tapered shape or a step shape at the tip. Moreover, it can also be set as the structure which combined these diameter-reduction structures.

  In the invention described above, the drawing direction of the blind and the axial direction of the winding shaft are not orthogonal to each other, and the winding shaft may be slightly inclined. According to this aspect, since the guided portion provided at the edge in the width direction of the blind is spirally wound around the winding shaft, it is possible to suppress an increase in the winding diameter due to the vertical overlap of the guided portions. it can.

  According to the present invention, in the wind-up type blind structure arranged in the skylight portion provided in the roof portion of the vehicle, the winding shaft moves in the axial direction simultaneously with the winding of the blind so that the width of the blind Winding is performed so that the guided portions provided at the edges in the direction do not overlap vertically. Therefore, tension can be given in the width direction of the blind when it is pulled out, and the diameter when it is wound can be reduced. According to the present invention, the portion of the take-up shaft where the guided portion is taken up has a reduced diameter structure, so that the take-up diameter of the portion where the guided portion is taken up can be prevented from increasing. . Furthermore, when the present invention is used, in order to improve the light shielding property and the heat shielding property, when a blind having a multilayer structure is used as the blind, it is possible to suppress an increase in the winding diameter.

(1) First embodiment (configuration of the embodiment)
FIG. 1 is a perspective view (A), a cross-sectional view (B), a side view (C), and (D) showing an example of a vehicle blind system using the present invention. Here, an example of a configuration in which the blind 101 can be deployed on the indoor side of a skylight (not shown) formed in the ceiling portion of the passenger car, and can be shielded between the skylight and the room as necessary. To do.

First, FIG. 1A shows a state in which the blind 101 is pulled out from the winding shaft 103 and developed. The blind 101 is a cloth, a resin sheet, or a flexible sheet-like (film-like) member obtained by combining them. Cylindrical guided portions 102 a and 102 b having a substantially circular cross section are fixed to both edges in the width direction of the blind 101. The guided portions 102a and 102b have a structure in which the edge of the blind 101 is folded back and the folded portion is wound around a rod of resin material. The guided portions 102 a and 102 b have such flexibility that the blind 101 can be wound around the winding shaft 103.

FIG. 1B shows a state where the guided portion 102a is engaged and guided with the guide portion 104a, and the guided portion 102b is engaged and guided with the guide portion 104b. The guide portions 104a and 104b include guide grooves 105a and 105b having a substantially cylindrical hollow shape in cross section. Each guide groove is formed with slits 106a and 106b, from which the blind 101 protrudes outward. Engagement between the guide grooves 105a and 105b is achieved by loosely fitting the guided portions 102a and 102b in a slidable state. In the state where the blind 101 is pulled out from the wound state or in the state where the blind 101 is wound, the guided portion 102a slides in the guide groove 105a, and at the same time, the guided portion 102b slides in the guide groove 105b.

The blind 101 is pulled out from the slits 106a and 106b, and the guided portions 102a and 102b are constrained in the guide portions 104a and 104b, respectively. By this constraint, the blind 101 is given tension in the width direction. That is, when the blind 101 is pulled out and unfolded from the state of being wound around the winding shaft 103, tension in the width direction is given.

  FIG. 1C is a side view showing details of the vicinity of the end of the winding shaft 103c of FIG. FIG. 1C shows a state in which the blind 101 is wound to some extent on the winding shaft 103. FIG. 1C conceptually shows a cross-sectional structure in a state where the blind 101 is being rolled up three times around the winding shaft 103, but the number of stacked sheets is arbitrary.

As shown in FIG. 1C, a ball screw 107 having a thread 108 formed at the end of the winding shaft 103 is fixed. The ball screw 107 is screwed into a screw receiving portion 110 in which a female screw 109 that is paired with a screw thread 108 is formed. The screw receiving part 110 is fixed to the support part 111, and the support part 111 is fixed to the ceiling part 112 of the vehicle body. The tip of the ball screw 107 is fixed to the rotating shaft 114 a of the take-up motor 114 through the coupling 113.

  FIG. 1D is a side view of the winding motor 114 as viewed from the direction of the rotating shaft 114a. The winding motor 114 is fixed to the pedestal 115. On both sides of the pedestal 115, guided portions 115 a having a convex cross section are provided. The guided portion 115a is engaged with a guide portion 116a that forms a guide groove. The guide portion 116 a is fixed to the base portion 116, and the base portion 116 is fixed to a support member 117 that is fixed to the ceiling portion 112. The guided portion 115a can slide in the extending direction of the winding shaft 107 in a state of being bound to the guide portion 116a. Note that the end opposite to the end shown in FIG. 1C is supported by the ceiling portion 112 in a state where the winding shaft 103 is rotatable and movable in the axial direction.

  As the blind 101, a multi-layered structure in which light shielding properties and heat shielding properties are emphasized can be adopted. FIG. 3 is a conceptual diagram showing a cross-sectional structure of a multi-layered blind. In the example of FIG. 3, the blind 101 has a structure in which a surface layer 101a, an intermediate layer 101b, and a back layer 101c are laminated from the indoor side. Since the surface layer 101a is exposed to the inside of the vehicle, the surface layer 101a is composed of a woven fabric or a non-woven fabric that emphasizes design. The intermediate layer 101b is made of a film-like resin material such as vinyl chloride in order to shield sunlight from heat and to ensure soundproofing. Since the back layer 101c is directly exposed to sunlight, a material that is less susceptible to deterioration and dimensional change due to exposure to sunlight and that excels in light shielding and heat shielding is selected. Specifically, a cloth made of cloth having a fine structure with a plain weave, and a fiber coated with silver coating is selected in order to increase the reflectance of the surface exposed to sunlight. Lamination is performed by performing sewing in a state where three layers are stacked. Here, an example of a three-layer structure is shown, but the number of layers is not limited to three.

(Operation of the embodiment)
First, an example of the operation when the blind 101 is wound from the pulled out state will be described. When the take-up motor 114 rotates in the direction of the arrow 118 in a state where the blind 101 is pulled out and deployed, the take-up of the blind 101 onto the take-up shaft 103 is started. When the winding shaft 103 rotates, the ball screw 107 rotates relative to the screw receiving portion 110. At this time, the screw receiving portion 110 is fixed to the vehicle body, and the take-up motor 114 is slidable with respect to the base portion 116, so that the take-up shaft 103 rotates while FIG. ) In the direction of arrow 119.

At this time, the winding shaft 103 rotates and slightly moves in the direction of the arrow 119, so that the guided portion 102a is spirally wound and does not overlap vertically. The degree of displacement of the guided portion 102a in the winding state can be adjusted by setting the relationship between the diameter of the winding shaft 103 and the pitch of the thread 108 and the female screw 109. A similar winding state is also realized at the other edge in the width direction of the blind 101. At the time of the winding, the blind 101 is slightly twisted, the degree is slight, also by forming the blind in a flexible material of the fabric or the like so that the twist does not matter be able to.

  Next, an example of the operation when the blind 101 is pulled out and deployed from the wound state will be described. The withdrawal from the wound state is performed manually. At this time, the winding motor 114 is turned off. When the pulling out of the blind 101 is completed, the take-up motor 114 is slightly rotated in the direction of the arrow 118, and control is performed to apply tension to the blind 101 in the pulling direction.

(Advantages of the embodiment)
According to the operation described above, since the guided portion 102a does not overlap (or does not overlap completely) when the blind 103 is wound, an increase in the winding diameter can be suppressed. Further, since the guided portions 102a and 102b do not overlap vertically in the wound state, the diameter thereof can be increased to such an extent that the engagement with the guide portions 104a and 104b can be surely performed. For this reason, the tension | tensile_strength to the width direction of the blind 101 in an unfolded state can be given reliably.

Further, since the portion of the guided portion 102a does not overlap when wound, even if the blind 101 has a multi-layer structure in order to pursue light shielding and heat shielding properties as shown in FIG. An increase in the winding diameter of the edge portion can be suppressed. For this reason, the blind 101 can be made into a multiple structure, and the light shielding property and heat shielding property can be pursued.

(Modification of embodiment)
The structures of the guided portions 102a and 102b and the guide portions 104a and 104b that are paired with the guided portions 102a and 102b can be considered in various shapes. What is important in the structure of this portion is that the edge in the width direction of the blind 101 can move in the pulling / winding direction, and a restraining force acts on the pulling in the width direction. Therefore, the structure is not particularly limited as long as such a function can be obtained. Further, the winding mechanism has been described by taking the configuration using the winding motor 114 as an example, but it may be manually or by an elastic member. For example, a mechanism that uses a spring or the like in place of the winding motor 114 to bias the blind 101 in the winding direction may be employed. In this case, the blind 101 is pulled out manually or by a separately provided motor, and the winding is performed by a biasing force of a spring. Further, the structure using the ball screw 107 as the mechanism for realizing the parallel movement of the take-up shaft 103 in the axial direction is illustrated, but the structure is not limited to this as long as the same movement can be realized.

(2) Second Embodiment The present embodiment is an example in which the vicinity of the end of the winding shaft of the blind has a reduced diameter structure. FIG. 2 is a conceptual diagram showing an example in which the vicinity of the end of the winding shaft has a reduced diameter structure. FIG. 2 conceptually shows a state in which a blind 200 provided with guided portions 203 on both edges in the width direction is wound around a winding shaft 201 adopting a reduced diameter structure.

  FIG. 2A shows an example in which the reduced diameter structure of this embodiment is applied to the structure of the winding shaft in the first embodiment. The reduced diameter structure shown in FIG. 2A has a tapered structure in which the diameter gradually decreases at one end of the winding shaft 201 (left end portion in FIG. 2), and the other end (rightward direction in FIG. 2). In the end portion, the diameter is once reduced toward the end portion, the diameter gradually increases at the tip, and the original diameter is restored at the tip portion.

  Even when the configuration shown in FIG. 1 is adopted, when the blind 101 is wound up, the blind 101 overlaps the upper and lower portions of the guided portion 102a (102b). growing. According to the configuration shown in FIG. 2A, the diameter of the take-up shaft 201 is gradually increased in the axial direction in which the guide shaft 203 is taken up and moved while being taken up. Therefore, in the state in which the blind 200 is wound up, the guided portion 203 is aligned in the axial direction of the winding shaft in the reduced diameter portion. Therefore, in the state where the blind 200 is wound up, an increase in the diameter of the portion denoted by reference numeral 202 can be suppressed. Further, according to the structure shown in FIG. 2A, in the state in which the blind 200 is wound, the arrangement of the guide portions 203 is the same at both ends of the winding shaft 201, so that the entire winding diameter is reduced. Can be made uniform.

  2B, in the structure of the winding shaft in the first embodiment, the diameter once decreases in the direction toward both ends of the winding shaft 201, and the diameter gradually increases beyond that. It is structured to return to the original diameter at the tip. The structure shown in FIG. 2B can obtain the same effect as the structure shown in FIG.

(3) Third Embodiment In the first or second embodiment, the winding shaft may be slightly inclined from 90 ° with respect to the winding direction of the blind. That is, the blind pull-out direction and the axial direction of the take-up shaft may be slightly deviated from the orthogonal state. By tilting the winding shaft, it is possible to suppress the occurrence of blind wrinkles when winding. The angle at which the take-up shaft is tilted is preferably in the range of about 1 ° to 2 °.

  INDUSTRIAL APPLICABILITY The present invention can be used for a blind opening / closing structure disposed in a skylight of a vehicle such as a passenger car, a bus, or a truck.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view (A), a sectional view (B), a side view (C), and a side view (D) showing an example of a blind system for a ceiling of a vehicle using the invention. It is a conceptual diagram which shows the example which made the end part of the winding shaft into the reduced diameter structure. It is a conceptual diagram which shows the cross-section of the blind of a multilayer structure. It is a conceptual diagram which shows the cross-sectional structure of the storage location of the blind in a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101 ... Blind, 102a ... Guided part, 102b ... Guided part, 103 ... Winding shaft, 104a ... Guide part, 104b ... Guide part, 105a ... Guide groove, 105b ... Guide groove, 106a ... Slit, 106b ... Slit, DESCRIPTION OF SYMBOLS 107 ... Ball screw, 108 ... Screw thread, 109 ... Female screw, 110 ... Screw receiving part, 111 ... Support part, 112 ... Ceiling part, 113 ... Coupling, 114 ... Winding motor, 114a ... Rotating shaft, 115 ... Base, 116: base portion, 116a: guide portion, 117: support member.

Claims (3)

Sheet-like blinds,
And a take-up shaft while rotating winding the blind,
A guided portion provided at an edge in the width direction of the blind ;
A guide portion engaged with the guided portion;
A support portion that is provided on a ceiling portion of the vehicle body and supports the winding shaft ;
The winding shaft is supported by the support portion by a screw provided at an end thereof,
The support portion has a female screw that meshes with the screw;
The winding shaft translates in the axial direction at the same time as the rotation when the screw and the female screw mesh with each other.
A blind system for a ceiling of a vehicle. The winding shaft has a reduced diameter structure,
The blind system for a ceiling of a vehicle according to claim 1, wherein the guided portion is wound around a portion of the reduced diameter structure. The blind system for a ceiling of a vehicle according to claim 1 or 2 , wherein an axial direction of the winding shaft is inclined with respect to a direction orthogonal to a drawing direction of the blind.

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