JP2007223409A - Webbed belt and seat belt device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the sense of installing a webbing. <P>SOLUTION: This webbing 3 made of ground fabric 12 constituted by webbing warp 102 extending roughly in the longitudinal direction of the webbing and woof 103 extending roughly in the cross direction of the webbing is furnished with a non-expandable bag body part 3B having roughly the same width as other belt parts 3A, 3B and formed in a bag shape the inside of which is hollow and filled with a softening material 14 inside of the bag body part 3B, this bag body part 3B is arranged at a contact part with an occupant. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a woven belt woven in a band shape with a plurality of fiber bundles substantially orthogonal to each other and a seat belt device using the woven belt as a webbing.

  2. Description of the Related Art Conventionally, weaving belts made of high-strength fibers are often used as belts for restraining heavy objects or bringing together a plurality of materials. One well-known use example of such a woven belt is a webbing of a seat belt device for restraining a passenger's body in a seat such as a vehicle.

  In general, a seat belt device includes a webbing that restrains a passenger, a retractor device (winding device) that winds up one side of the webbing so that the webbing can be pulled out, a tongue (slip guide) provided on the webbing, It is comprised by the buckle etc. which mount a webbing to a passenger by engaging (for example, refer patent document 1).

  In the seat belt device configured as described above, the passenger pulls out the webbing from the retractor device, and engages the tongue provided on the webbing with the buckle to mount the webbing. Thereby, a passenger is restrained by the seat.

JP-A-5-321154

  In general, the webbing of the seat belt device is configured to have high strength due to its property of restraining the occupant's body when the vehicle collides. Therefore, when a large load is applied to the occupant's body at the time of a vehicle collision or the like, the webbing is hard to hit the body, which may cause a reduction in wearing feeling. Further, at this time, the passenger receives a convex feeling when the edges formed at both ends in the width direction of the webbing hit the body, which may cause a decrease in wearing feeling.

  The objective of this invention is providing the woven belt and seatbelt apparatus which can improve a mounting feeling.

  In order to achieve the above object, a first invention is a woven belt constituted by weaving a first fiber bundle extending in a substantially webbing longitudinal direction and a second fiber bundle extending in a webbing substantially width direction. And it has the non-inflatable bag body part formed in the bag shape which is hollow inside, It is characterized by the above-mentioned.

  When a woven belt is used, for example, as a webbing for a seat belt device of a vehicle, the passenger pulls out the webbing from the retractor, and the webbing is attached by engaging the tongue provided on the webbing with the buckle. Restrained by the sheet.

  At this time, in the first invention of the present application, the webbing is provided with a non-inflatable bag body portion formed in a bag shape having a hollow inside. As a result, the bag body portion is disposed at the contact portion between the webbing and the passenger's body, and the bag body portion is filled with a flexible material such as urethane foam so that the vehicle can be boarded at the time of a vehicle collision or the like. Even when a large load is applied to the person's body, it is possible to soften the webbing against the body. As a result, the wearing feeling can be improved. In addition, since the bag body portion is made non-inflatable, it is possible to obtain the effect of improving the wearing feeling while suppressing the decrease in the strength of the entire webbing and maintaining the restraining function of the passenger.

  In order to achieve the above object, a second invention comprises a base fabric formed by weaving a first fiber bundle extending in the webbing substantially longitudinal direction and a second fiber bundle extending in the webbing substantially width direction. The woven belt is formed into a hollow cylindrical shape, and has a cylindrical body portion with folding fixing portions that are fixed by folding the base fabric into the inner side at both ends in the webbing width direction. It is characterized by.

  When a woven belt is used, for example, as a webbing for a seat belt device of a vehicle, the passenger pulls out the webbing from the retractor, and the webbing is attached by engaging the tongue provided on the webbing with the buckle. Restrained by the sheet.

  At this time, in the second invention of the present application, the base fabric is folded inwardly at both ends of the webbing cylinder portion in the webbing width direction, and a folding fixing portion fixed in the folded state is provided. Thereby, unlike the conventional webbing, a hard edge is not formed at both ends in the width direction, and a bag-like soft edge can be formed. As a result, it is possible to suppress the convex sensation experienced by the passenger when the edge hits the body by disposing the cylindrical body portion at the contact portion between the webbing and the passenger's body. Therefore, the wearing feeling can be improved.

  A third invention is characterized in that, in the first invention or the second invention, the bag body portion or the cylindrical body portion is constituted by a weaving structure of the first fiber bundle and the second fiber bundle. To do.

  In the third invention of the present application, the bag part or the cylindrical part is configured by a weaving structure of a first fiber bundle extending in the webbing substantially longitudinal direction and a second fiber bundle extending in the webbing substantially width direction. Thereby, a bag body part or a cylindrical body part can be made into the non-expandable structure which has intensity | strength with respect to both the load which acts on webbing substantially longitudinal direction, and the load which acts on webbing substantially width direction.

  According to a fourth invention, in the third invention, the bag body portion or the cylindrical body portion is provided in a contact portion with a belt restraint target.

  Thereby, when using a woven belt as webbing of the seatbelt apparatus of a vehicle, for example, a bag body part or a cylinder part can be located in the contact part with the passenger | crew's body which is belt restraint object. As a result, for example, the passenger's body can be restrained by a bag portion filled with a flexible material such as foamed urethane, so that the feeling of wearing can be improved.

  According to a fifth invention, in the third invention or the fourth invention, a flexible material is provided inside the bag body portion or the cylindrical body portion.

  Thereby, when using a woven belt as webbing of the seatbelt apparatus of a vehicle, for example, a passenger | crew's body can be restrained by the bag body part or cylinder part which filled the flexible material inside. Therefore, the wearing feeling can be improved.

  According to a sixth invention, in any one of the second to fifth inventions, the folding fixing portion is fixed in a state in which both end portions in the webbing width direction of the base fabric formed in a cylindrical shape are brought into close contact with each other. It is formed by turning over a cylindrical base fabric.

  Thereby, a folding fixing part can be formed efficiently and easily.

  In order to achieve the above object, a seventh invention is connected to the woven belt according to any one of the first to sixth inventions, a winding device capable of winding the woven belt, and a stationary member. And a tongue that is provided on the woven belt and engages with the buckle.

  According to the present invention, a feeling of wearing can be improved.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The present embodiment is an example in which the present invention is applied to an automobile seat belt device.

  FIG. 1 is a perspective view showing a seat belt device according to a first embodiment of the present invention.

  In the figure, a seat belt device 1 includes a webbing 3 (weaving belt) for restraining an occupant fed out from a retractor 2 (winding device). The retractor 2 is a device that winds up the webbing 3 and is fixed to the lower portion of the center pillar 4 on the vehicle interior side. The webbing 3 drawn out from the retractor 2 to the upper side of the vehicle body is inserted through a through ring 5 attached to the upper part of the center pillar 4 and folded back toward the lower side of the vehicle body. The tip of the webbing 3 is fixed to an anchor plate 7 provided between the center pillar 4 and the seat 6.

  A tongue 8 is provided between the through ring 5 and the anchor plate 7 in the webbing 3 so as to be movable in the longitudinal direction of the webbing. The tongue 8 is attached to and detached from a buckle 9 disposed on the opposite side of the anchor plate 7 across the seat 6. The buckle 9 is fixed to the vehicle body via a wire 10 and a bracket 11.

  The webbing 3 is provided with a belt portion 3A, 3C and a belt shape between the belt portions 3A, 3C so as to have substantially the same width as the belt portion 3A, 3C, and is formed in a bag shape having a hollow inside. The said bag part 3B of property. The belt portions 3A and 3C and the bag portion 3B are composed of a warp yarn 102 (see FIGS. 3 and 4 to be described later) extending in the substantially longitudinal direction of the webbing and a weft yarn 103 (described later in FIG. 3 and FIG. 4) are integrally formed by a base fabric 12 (see FIG. 2 described later). The bag portion 3B is disposed in a portion of the webbing 3 that comes into contact with the body of the passenger when the passenger (not shown) engages the tongue 8 with the buckle 9 and wears the webbing 3. .

  2A is a cross-sectional view of the belt portion 3A of the webbing 3 taken along the line IIA-IIA in FIG. 1, and FIG. 2B is a cross-sectional view of the bag body portion 3B of the webbing 3 taken along the line IIB-IIB in FIG. .

  As shown in FIG. 2A, the belt portion 3A is formed in a solid belt shape by a base fabric 12 formed by weaving the warp yarn 102 and the weft yarn 103 (see FIGS. 3 and 4 described later). ing. The belt portion 3C has the same configuration as the belt portion 3A.

  On the other hand, as shown in FIG. 2 (b), the bag body portion 3 </ b> B is formed in a bag shape having a hollow inside by the base cloth 12. This bag portion 3B has ear portions 15 and 15 fixed in this state by crushing and adhering both end portions to both end portions in the webbing width direction (both end portions in the left and right direction in FIG. 2B). is doing. The ear portion 15 may be formed by applying heat with an iron or the like to thermally bond the base fabrics, or may be formed by bonding the base fabrics using an appropriate adhesive. . Moreover, you may make it form by sewing base fabrics together. And the inside of the bag part 3B is filled with flexible materials 14, such as foaming urethane, for example.

  FIG. 3 is an enlarged side view of the belt portions 3 </ b> A and 3 </ b> C of the webbing 3. As shown in FIG. 3, the belt portions 3 </ b> A and 3 </ b> C extend in a substantially longitudinal direction (left and right direction in FIG. 3) and a plurality of warp yarns 102 and substantially in the width direction (up and down direction in FIG. 3). The weft 103 (shaded portion in the figure) is woven. The weft 103 is scanned in a straight line by reciprocating in the width direction of the belt portion 3A. On the other hand, a plurality of warps 102 cross between the parallelly arranged wefts 103 and are woven into a meandering shape. ing.

  FIG. 4 is an enlarged side view of the bag part 3 </ b> B of the webbing 3. As shown in FIG. 4, the bag body portion 3 </ b> B extends in the substantially longitudinal direction (left and right direction in FIG. 4) and the plurality of warps 102 extending in the substantially longitudinal direction (up and down direction in FIG. 4). The weft 103 (shaded portion in the figure) is woven. At this time, the weft 103 is scanned so as to gradually move in the longitudinal direction while rotating in the circumferential direction of the bag portion 3B (that is, in a substantially spiral shape), and a plurality of warps 102 are arranged in parallel to the weft 103. It has a woven structure that crosses between them and is woven into a meandering shape.

  The warp yarn 102 (first fiber bundle) and the weft yarn 103 (second fiber bundle) are both fiber bundles obtained by bundling a plurality of single yarns (not shown; filament, single unit yarn). The synthetic fiber yarn is typically composed of a polyethylene terephthalate polymer produced by an esterification reaction using terephthalic acid and ethylene glycol.

  FIG. 5 is a weaving configuration diagram conceptually showing the weaving configuration in the entire circumferential direction of the bag body portion 3B.

  As shown in FIG. 5, a plurality of the warp yarns 102 extending in the webbing longitudinal direction (direction perpendicular to the paper surface in FIG. 5) are arranged along the circumferential direction of the bag body portion 3B. The wefts 103 are woven into a meandering shape along the circumferential direction of the bag portion 3B while intersecting between the warp yarns 102 arranged in parallel (every two warps here). The weft 103 is woven so as to gradually advance in the longitudinal direction of the webbing (that is, substantially spiral) while circling in the circumferential direction of the bag body portion 3B as described above. Are woven so that the crossing position with the warp yarn 102 is shifted. Here, the intersecting position of the weft 103 (the weft shown by the solid line in the drawing) and the rotated weft 103 (the weft shown by the broken line in the drawing) with the warp 102 is shifted by one warp.

  With such a weaving configuration, the bag portion 3B has a non-inflatable bag-like structure that has strength against both a load acting in the webbing substantially longitudinal direction and a load acting in the webbing substantially width direction. .

  According to this embodiment described above, the following effects are obtained.

  That is, when the seat belt is worn, the passenger pulls out the webbing 3 from the retractor 2 and the tongue 8 provided on the webbing 3 is engaged with the buckle 9 so that the webbing 3 is attached. Is restrained by the seat 6.

  At this time, in this embodiment, the webbing 3 has a non-inflatable bag body portion 3B formed in a bag shape having a hollow inside, and the bag body portion 3B is contacted with the webbing 3 and the body of the passenger. It is set as the structure which arrange | positions in the contact part and fills the inside of this bag part 3B with flexible materials 14, such as urethane foam. As a result, even when a large load is applied to the occupant's body at the time of a vehicle collision or the like, the soft material 14 in the bag body 3B absorbs the impact, so that the webbing 3 can be softened against the body. it can. Therefore, the wearing feeling of the webbing 3 can be improved.

  Moreover, in this embodiment, it can be set as a non-expanding structure especially by making the bag part 3B into the woven structure as mentioned above. Thereby, the improvement effect of a feeling of wearing mentioned above can be acquired, suppressing the fall of the intensity of the whole webbing 3, and holding a passenger's restraining function.

  In the present embodiment, in particular, the belt portion 3A, the bag body portion 3B, and the belt portion 3C constituting the webbing 3 are configured continuously and integrally. Thereby, compared with the case where the webbing 3 is comprised by manufacturing and connecting these belt part 3A, the bag part 3B, and the belt part 3C separately, a number of parts can be reduced. Further, since the belt widths of the belt portions 3A, 3C and the bag body portion 3B are substantially the same, the webbing as a whole has a sense of unity and does not impair the appearance.

  In the above embodiment, the bag body portion 3B is provided on the shoulder belt portion of the webbing 3 that restrains the upper body of the occupant. However, the present invention is not limited to this, and for example, a lap belt that restrains the occupant's waist. You may make it provide in a part.

  Next, a second embodiment of the present invention will be described with reference to the drawings. The present embodiment is an example in which the present invention is applied to a child seat provided in a car seat.

  FIG. 6 is a perspective view showing the overall configuration of the child seat in the present embodiment.

  As shown in FIG. 6, the child seat 21 has a seat body 22 on which an infant sits and a base 23 that supports the seat body 22 so as to be reclining. The sheet body 22 and the base 23 are arcuate curved surfaces that face each other, and the sheet body 22 can be reclined with respect to the base 23 along the curved surface. The control lever 24 controls a lock mechanism (not shown) that prevents relative movement between the seat body 22 and the base 23 to a locked state or an unlocked state, so that the seat body 22 can be reclined to a desired reclining angle. ing. The seat body 22 is provided with an infant seat belt which is extended from the hole 22a and includes a pair of webbings 25A and 25B for restraining the infant and a protection pad 32, and the front end of the protection pad 32. And a buckle 27 on which the tongue 26 is detachably inserted and locked.

  The child seat 21 has its base 23 placed on a seat 28. For example, after the seat belt 29 attached to the seat 28 is inserted into the attachment hole 30 or the attachment hole 31 formed in the seat body 22, It is fixed to the seat 28 by tightening.

  7 is a cross-sectional view of the webbing 25A along the VII-VII cross section in FIG.

  As shown in FIG. 7, the webbing 25 </ b> A includes warps (not shown) extending in the substantially longitudinal direction of the webbing and wefts extending in the substantially width direction of the webbing (like the base fabric 12 of the first embodiment described above). Is formed in a cylindrical shape having a hollow inside. The webbing 25A has folding fixing portions 34, to which the base fabric 33 folded inward is fixed in this state, at both end portions in the webbing width direction (left and right end portions in FIG. 7). The cylindrical webbing 25A is filled with a flexible material 35 such as urethane foam. The other webbing 25B has the same configuration as the webbing 25A.

  FIG. 8 is an explanatory diagram for explaining a method of forming the folding fixing portion 34 of the webbing 25A.

  First, as shown to Fig.8 (a), the webbing width direction both ends (both ends in the left-right direction in Fig.8 (a)) of the base fabric 33 formed in the cylinder shape are crushed and adhered, and the adhered state To fix the ears 36, 36. Similar to the ear portion 15 of the first embodiment, the ear portion 36 may be formed by, for example, applying heat with an iron or the like to thermally weld the base fabrics, or using an appropriate adhesive. Alternatively, the base fabrics may be bonded together. Moreover, you may make it form by sewing base fabrics together. Thereafter, by turning over the cylindrical base cloth 33 on which the ear portions 36 and 36 are formed, a webbing 25A having folding fixing portions 34 and 34 at both ends in the webbing width direction is formed as shown in FIG. 8B. Is done.

  Although not specifically described with reference to the drawings, the weaving configuration of the webbing 25A, 25B (base fabric 33) is the same as the weaving configuration of the bag body portion 3B of the first embodiment described above (see FIG. 4). With such a weaving configuration, the webbing 25A, 25B has a non-expandable cylindrical structure having strength against both a load acting in the webbing substantially longitudinal direction and a load acting in the webbing substantially width direction. .

  In the above, the webbing 25A, 25B constitutes the woven belt described in each of the claims, and is formed into a hollow cylindrical shape according to claim 2, and the base fabric is formed at both ends in the webbing width direction. It also constitutes a cylindrical part provided with a folding fixing part that is folded and fixed inside.

  According to this embodiment described above, the following effects are obtained.

  In this embodiment, webbing 25A, 25B is set as the structure which has the fold fixing | fixed part 34,34 fixed in the state where the base fabric 33 was folded inside, and was folded in the webbing width direction both ends. Thereby, unlike the conventional webbing, a hard edge is not formed at both ends in the width direction, and a bag-like soft edge can be formed. As a result, it is possible to suppress the convex feeling experienced by the passenger when the edge hits the body. Therefore, the wearing feeling can be improved.

  In this embodiment, the webbings 25A and 25B are particularly formed in a cylindrical shape having a hollow inside, and the inside of the cylindrical body is filled with a flexible material 35 such as urethane foam. Thereby, even when a load acts on the infant's body at the time of a vehicle collision or the like, the soft material 35 in the webbing 25A, 25B absorbs the impact, so that the webbing 25A, 25B can be softened against the body. it can. Therefore, it is possible to improve the wearing feeling of the webbings 25A and 25B.

  In the present embodiment, in particular, the webbing 25A, 25B can have a non-expandable structure by adopting the weaving configuration as described above. Thereby, the improvement effect of a feeling of wearing mentioned above can be acquired, suppressing the fall of intensity of webbing 25A and 25B, and maintaining the restraint function of an infant.

  In the present embodiment, particularly, as shown in FIG. 8 described above, both end portions in the webbing width direction of the base fabric 33 formed in a cylindrical shape are crushed to form ear portions 36, 36. By turning over the cylindrical base cloth 33 on which 36 is formed, a bag body having the folding fixing portions 34 and 34 is formed. By doing in this way, the folding fixing part 34 can be formed efficiently and easily.

  In the embodiment described above, an example in which the present invention is applied to an automobile has been described. However, the present invention is not limited thereto, and may be applied to a seat belt of another vehicle such as a railroad or an aircraft. In addition, the present invention is not limited to a body restraint seat belt provided on a vehicle, and is applied to a restraint belt for restraining articles, such as a belt for restraining heavy objects or a plurality of materials together. Also good.

It is a perspective view showing the whole structure of a seatbelt device provided with a 1st embodiment of the present invention. FIG. 2 is a cross-sectional view of a webbing belt portion taken along a line IIA-IIA in FIG. 1 and a cross-sectional view of a webbing bag body portion taken along a line IIB-IIB in FIG. It is an enlarged side view of the belt part of webbing. It is an enlarged side view of the bag body part of webbing. It is the weaving structure figure which represents notionally the weaving structure in the whole circumferential direction of a bag body part. It is a perspective view showing the whole structure of the child seat provided with the 2nd Embodiment of this invention. It is sectional drawing of the webbing by the VII-VII cross section in FIG. It is explanatory drawing for demonstrating the method of forming the folding fixing part of webbing.

Explanation of symbols

1 Seat belt device 2 Retractor (winding device)
3 Webbing (woven belt)
3B Bag body part 4 Tongue 5 Buckle 8 Tongue 9 Buckle 12 Base cloth 13 Folding fixing part 14 Flexible material 25A Webbing (weaving belt, cylinder part)
25B webbing (weaving belt, cylinder)
33 base fabric 35 flexible material 102 warp (first fiber bundle)
103 Weft (second fiber bundle)

Claims (7)

A woven belt formed by weaving a first fiber bundle extending in a substantially longitudinal direction of a webbing and a second fiber bundle extending in a substantially width direction of the webbing,
A woven belt having a non-inflatable bag body formed in a bag shape having a hollow inside. A woven belt made of a base fabric formed by weaving a first fiber bundle extending in a substantially longitudinal direction of a webbing and a second fiber bundle extending in a substantially webbing width direction,
A weaving belt comprising a cylindrical body portion that is formed in a cylindrical shape having a hollow inside and has folding fixing portions in which the base fabric is folded and fixed to the inner side at both ends in the webbing width direction. The woven belt according to claim 1 or 2,
The woven belt characterized in that the bag body part or the cylindrical body part is constituted by a weaving structure of the first fiber bundle and the second fiber bundle. The woven belt according to claim 3,
A weaving belt comprising the bag body portion or the cylindrical body portion at a contact portion with a belt restraint target. The woven belt according to claim 3 or 4,
A woven belt characterized in that a flexible material is provided inside the bag body or cylinder. The woven belt according to any one of claims 2 to 5,
The fold fixing portion is formed by fixing the both ends of the base fabric in the webbing width direction in close contact with each other, and then turning the cylindrical base fabric upside down. belt. The woven belt according to any one of claims 1 to 6,
A winding device capable of winding the woven belt;
A buckle connected to the stationary member;
A seat belt device comprising a tongue provided on the woven belt and engaged with the buckle.

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