JP2006273042A - Curtain airbag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a curtain airbag device capable of maintaining tension of a curtain part even when expansion force is eliminated by moving a fixed position of the curtain part and speedily developing the curtain part in moving this fixed part. <P>SOLUTION: This curtain airbag device is constituted to move tension parts P, P to a position of supporting pins 7, 7 as the tension parts P, P connected by string members 8, 8 are pulled to the lower side as head end parts Q, Q on a side part of the curtain part 5 is developed and expanded downward when the curtain part is developed and expanded by constituting it so as to move supporting positions (fixed positions) on both sides of the curtain part 5 by the supporting pins 7, 7 and the string members 8, 8 while the curtain part 5 is furnished with the length of three sides (X+Y+Z) in storing the curtain part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a curtain airbag device, and in particular, an opening portion (hereinafter referred to as a window portion) such as a window and a door that can be used in a vehicle, a building, an aircraft, a train, a ship, a spacecraft, a space station, etc. The present invention relates to a curtain airbag device that is deployed and inflated to cover.

  2. Description of the Related Art Conventionally, there is known a curtain airbag device that covers and expands and winds a window portion instantaneously in a curtain shape when a vehicle collides.

  In this curtain airbag device, a non-deployed curtain part is accommodated at the periphery of the window part, and the curtain part is covered by opening the curtain part in a predetermined state (for example, at the time of a collision).

  However, in this deployed state, if the curtain portion does not generate tension (tension), the window portion cannot be covered reliably. It is a problem.

  Conventionally, in order to generate this tension, for example, in a rectangular window part, the base part of the curtain part is fixed to three sides of the periphery of the window part, and the expanding part that expands by gas in the developing part that becomes a free end part when deployed (Air chamber) is provided, and gas is supplied to the inflating portion, whereby the apparent length of the free end is shortened to generate tension.

  However, in this case, in order to cover the large window portion, it is necessary to make the expansion portion quite large, and since it is necessary to supply a large amount of gas to the expansion portion, the size of the wind portion that can be covered is large. There was a problem that there was a limit.

  Therefore, as in Patent Document 1 below, in the curtain airbag device that covers the back window of the vehicle, the curtain portion is stored at the upper edge of the bag window, and the tension applying support point is provided at the intermediate position between the left and right edges of the bag window. It has been proposed to generate tension by deploying the curtain portion below the tension applying support point during deployment and expansion.

  Also, in Patent Document 2 below, guide rails extending in the vertical direction are provided at the left and right ends of the back window, and the curtain portion housed in the upper edge of the bag window is moved downward along the guide rail during expansion. There have been proposed those that generate tension by changing the fixing position (supporting position) of the curtain portion.

  As disclosed in these patent documents, by providing a tension applying support point and a guide rail, it is possible to support the curtain part other than the base part, so that the expansion part is not enlarged and the gas amount is small. It seems that tension can be obtained in the curtain part.

JP 2004-58849 A JP 2004-58850 A

  However, in the case of Patent Document 1, first, the tension applying support point and the curtain part are connected by the cloth body (extension part) to define the position of the curtain part, and the fixing position of the curtain part does not move. When the expansion force disappears in the curtain part, the cloth-like body is loosened. As a result, there is a problem that the tension of the curtain part cannot be maintained.

  Then, although it is possible to move the fixed position of a curtain part like patent document 2, in this case, since sliding resistance arises between guide rails when moving the fixed position of a curtain part, There is a problem that rapid deployment and expansion cannot be performed. Also. When the guide rail is deformed by an impact at the time of a collision or the like, there is a problem that proper expansion and expansion may not be possible.

  Therefore, according to the present invention, in the curtain airbag device, by moving the fixed position of the curtain portion, the tension of the curtain portion can be maintained even when the expansion force is lost, and the fixed position is moved. It is an object of the present invention to provide a curtain airbag device in which the curtain portion can be quickly deployed.

  In order to achieve such an object, in the invention according to claim 1 of the present invention, the window portion is stored in the first side and the second side of the peripheral portion of the window portion in the storage state, and the window portion is expanded in the expanded state. In a curtain airbag device comprising: a curtain portion that expands and inflates so as to cover; and a gas supply means that supplies gas to the expansion portion formed in the curtain portion so that the curtain portion expands and inflates in a predetermined state. The curtain portion is in the stowed state, the tip side portion located on the tip side in the deployment direction during deployment and expansion is located in the vicinity of the support portion provided on the second side spaced from the first side, and the curtain portion is A tension part located in the vicinity of the support part is stored so as to be close to the first side, and at the time of deployment and expansion, the distal end side part moves in the deployment direction by the expansion force of the expansion part, The tension part is supported Parts to move to the vicinity of those that are adapted to be engaged to the support portion.

  With such a configuration, when the curtain portion is deployed and inflated, the expansion side of the expansion portion causes the tip side portion located near the support portion to move in the deployment direction during storage, and the tension close to the first side during storage. The part moves to the vicinity of the support part and engages with the support part.

  For this reason, at the time of expansion and expansion of the curtain portion, the tension portion moves to the support portion, and the tension of the curtain portion can be generated at the position of the support portion.

  That is, since the tension part that was close to the first side during storage is engaged by the support part that is separated from the first side by the expansion force of the expansion part, the length of the first side and the second side Even if tension is not generated at a distance, the tension can be generated by moving the fixed position of the curtain portion.

  Here, both the first side and the second side are concepts including not only a straight line but also a curved line.

  Further, the specific structure of the support part is not particularly limited as long as it can support the tension part of the curtain part during expansion and expansion, such as a support pin, a support hook, and a support hole.

  Furthermore, the window part is a concept including not only a window part composed of one window but also a window part in which a plurality of windows are connected in series.

  According to the second aspect of the present invention, in the housed state, the wind part is housed in the first side located at the center, the second side located on both sides thereof, and the third side, and the window part is deployed in the expanded state. A curtain airbag comprising: a curtain portion that expands and inflates so as to cover a portion; and a gas supply means that supplies gas to the expansion portion formed in the curtain portion so that the curtain portion expands and expands in a predetermined state. In the apparatus, the curtain portion is in a retracted state, and a second side tip end portion located on the tip end side in the deployment direction on the second side during deployment and expansion is provided on a second side separated from the first side. A second side support that is located in the vicinity of the two-side support portion and the third side tip portion located on the tip side in the deployment direction on the third side during deployment and expansion is provided on the second side that is separated from the first side. Is located in the vicinity of the portion and A second side tension part located in the vicinity of the side support part is close to the first side, and a third side tension part located in the vicinity of the third side support part during deployment and expansion is The second side-side tip side and the third side-side tip side are moved in their respective deployment directions by the expansion force of the expansion part during deployment and expansion. The second side side tension part and the third side side tip side part move to the vicinity of the second side support part and the third side support part, respectively, and are engaged with the second side support part and the third side support part. Are configured to be combined.

  With such a configuration, the curtain portion is expanded by the expansion force of the expansion portion at the time of deployment and expansion, and the second side side tip side portion located near the second side support portion and the third side support portion located near the third side support portion when stored. The side side tip side part moves in the deployment direction, and the second side side tension part and the third side side tension part, which are located close to the first side side during storage, respectively, Moving to the vicinity of the three-side support portion, the second-side support portion and the second-side support portion are engaged.

  For this reason, at the time of expansion and expansion of the curtain part, the second side tension part and the third side tension part move to the second side support part and the third side support part, respectively. Tension can be generated between the third side support portions.

  That is, the second side tension portion and the third side tension portion that are close to the first side during storage are the lengths of the first side, the second side, and the third side due to the expansion force of the expansion portion. Even if tension is not generated at such a distance, the tension can be generated by moving the fixed position of the curtain portion.

  Therefore, when the window portion opening is substantially rectangular, tension can be generated in the curtain portion without enlarging the expanding portion and without requiring a large amount of gas.

  And since the fixed position of a curtain part moves, even if the expansion force of an expansion part falls, the tension | tensile_strength of a curtain part can be maintained.

  Furthermore, the movement of the fixed position of the curtain portion does not use a guide rail, so that no sliding resistance is generated, and the curtain portion can be rapidly expanded and expanded.

  The second side and the third side are not particularly limited in shape as long as they are sides that extend opposite to each other. Further, the shape of the window portion may be a rectangle, a parallelogram, a trapezoid, or the like.

  According to a third aspect of the present invention, an angle formed by each side is set to an obtuse angle.

  With such a configuration, in the first aspect of the invention, the first side and the second side, in the second aspect of the invention, the angle formed by the first side and the second side, and the first side and the third side. Is set to an obtuse angle that is wider than a right angle, the tension portion is supported by the support portion located on the outer side of the storage position when the curtain portion is deployed and expanded.

  Therefore, the tension can be generated in the curtain part without the need for the expansion part required to generate the tension in the curtain part to be smaller or not at all, and the inventions according to claim 1 and claim 2 The effect of can be obtained more.

  According to a fourth aspect of the present invention, the tip side portion and the tension portion are connected by a string-like member, and the string-like member is on a side away from the first side with respect to the support portion. It has been routed to be located.

  With such a configuration, the leading end side of the curtain portion and the tension portion are connected by the string-like member, and the movement in the unfolding direction of the leading end side portion is transmitted to the tension portion by the string-like member, and the tension portion is supported by the supporting portion. Will move to the side.

  Therefore, the interlocking structure between the tip side portion and the tension portion can be achieved with a simple configuration called a string-like member.

  According to a fifth aspect of the present invention, the string-like member is installed at a position outside the curtain portion when the curtain portion is stored.

  With such a configuration, it is possible to prevent a string-like member from being affected when the curtain portion deployed on the inner side of the window is expanded and expanded.

  Therefore, the curtain portion can be expanded and expanded more reliably and quickly.

  In the invention according to claim 6, the tip side portion and the tension portion are connected by an ear portion having a long hole extending in the deploying direction, and the support portion is provided in the long hole of the ear portion. Is engaged.

  With such a configuration, the tip side of the curtain part and the tension part are connected by the ear part, and the movement of the tip side part in the unfolding direction is transmitted to the tension part, so that the tension part moves to the support part side. It will be.

  Therefore, the interlocking structure between the tip side portion and the tension portion can be achieved without providing a separate member, and productivity and cost can be improved.

  According to a seventh aspect of the present invention, the window portion is a vehicle wind portion, and the predetermined state is a vehicle collision time, a collision prediction time, or a rollover determination time.

  With such a configuration, the curtain airbag device of the present invention is employed in a vehicle airbag device that is deployed and inflated when the vehicle collides.

  Therefore, the occupant's protection performance in the curtain airbag device for a vehicle that requires rapid deployment and inflation can be enhanced.

  In the invention according to claim 8, when the curtain portion is deployed and expanded, the tension line of the curtain portion formed by the support portion is such that the head center of the occupant is positioned closer to the first side than the tension line. It is set to do.

  With this configuration, the tension line is set so that the center of the occupant's head is positioned on the first side. Will occur.

  Therefore, the head of the occupant can be reliably restrained by the curtain portion, and for example, the movement of the occupant in the vehicle outward direction can be reliably suppressed when the vehicle rolls over or collides.

  According to a ninth aspect of the present invention, the expanding portion is formed in the vicinity of the tension portion.

  With such a configuration, the movement of the expanding portion that moves (deploys) in a direction away from the first side during deployment and expansion can be transmitted early and reliably to the tension portion.

  Therefore, the movement of the tension part of the curtain part becomes faster, and the expansion and expansion of the curtain part can be performed quickly.

  In a tenth aspect of the present invention, the inflatable portion is formed on a tension line of a curtain portion formed by the tension portion.

  With such a configuration, the apparent length of the tension line can be shortened by the expansion of the expansion portion on the tension line during deployment and expansion.

  Therefore, a higher tension can be obtained at the tension line, and the effect of the curtain airbag device of the present invention can be further enhanced.

  According to the present invention, when the curtain portion is deployed and expanded, the tension portion moves to the support portion, and the tension of the curtain portion can be generated at the position of the support portion.

  That is, since the tension part that was close to the first side during storage is engaged by the support part that is separated from the first side by the expansion force of the expansion part, the length of the first side and the second side Even if tension is not generated at a distance, the tension can be generated by changing the fixing position of the curtain portion.

  Therefore, in the curtain airbag device, by moving the fixed position of the curtain portion, the tension of the curtain portion can be maintained even when the inflating force is lost, and the movement of the fixed position can be performed by the guide rail. Since it is not what is performed, the curtain portion can be rapidly expanded and expanded.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
First, a first embodiment of the curtain airbag device of the present invention will be described with reference to FIGS. The first embodiment of the present invention is a curtain airbag device 2 installed on a back door 1 of a vehicle, FIG. 1 is a rear view of the vehicle showing the curtain airbag device 2 in a stored state, and FIG. 3 is a rear view of the vehicle showing the curtain airbag device 2 in a state, FIG. 3A is a detailed view of a main part of a support pin of the curtain airbag device 2 in a stored state, and FIG. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3B, and FIG. 5 is a perspective view of the main part showing the side of the curtain part.

  As shown in FIGS. 1 and 2, the curtain airbag device 2 is installed at the peripheral edge of the back window 3 of the back door 1. A base casing 4 that is installed in a substantially gate shape on the three sides of both side edges 32 and 33, a cloth curtain portion 5 that is folded and stored in the base casing 4, and a back door 1 that is above the base casing 4. And an inflator 6 for supplying gas to the curtain unit 5 at the time of a collision, an airbag sensor (not shown) for detecting an impact or the like, a detection signal of the airbag sensor, a collision, a vehicle rollover, A control unit (not shown) that transmits a gas supply signal when it is determined that the possibility of collision or rollover is equal to or greater than a predetermined degree.

  In the present embodiment, in order to protect the occupant at the time of a rear collision of the vehicle, the airbag sensor is provided in the vicinity of the rear bumper, and is controlled so as to expand and inflate the curtain unit 5 when a rear collision is detected.

  The above-described base casing 4 is composed of a metal frame member having a substantially U-shaped cross section that is open to the inner side of the back window 3, and has an upper edge portion 4 a installed on the upper edge 31 of the back window 3, and both side edges. The right edge part 4b installed in 32,33 and the left edge part 4c are provided.

  In addition, support pins 7 and 7 are provided at the lower ends of the right edge 4b and the left edge 4c of the base casing 4 to support the curtain 5 at the time of expansion. The support pins 7 are provided such that their axes extend in the vehicle longitudinal direction.

  A plurality of fastening flanges 4e that are fastened and fixed to an inner panel (not shown) of the back door 1 are provided on the outer sides of the side parts 4a, 4b, and 4c, and the base casing 4 is attached to the back door by the fastening flanges 4e. 1 is firmly fastened and fixed. Thereby, the base casing 4 can receive the reaction force at the time of expansion | deployment expansion of the curtain part 5, and the reaction force at the time of tension | tensile_strength generation | occurrence | production of the curtain part 5 reliably.

  The aforementioned curtain portion 5 is made of cloth, and is stored in a small folded state in the base casing 4 when stored, and when deployed and expanded, a trapezoidal back window 3 is formed as shown in FIG. It expands in a substantially trapezoidal shape that spreads greatly to cover the entire surface.

  Inflated portions 51, 52, 53 extending in the vertical direction are provided on both sides and the center of the curtain portion 5 in the vehicle width direction, and unfolded expanding portions 54 are provided between the expanded portions 51, 52, 53. ing. Further, a communication inflating portion 55 extending in the vehicle width direction is provided at the upper ends of the inflating portions 51, 52, 53 so that the gas from the inflator 6 is appropriately distributed to the inflating portions 51, 52, 53. It is configured.

  This curtain part 5 is fixed to the upper edge part 4a of the above-described base casing 4 only at the upper part (base part) 56, and the both side parts are not fixed to the right edge part 4b and the left edge part 4c. For this reason, the curtain part 5 is not restrained by the right edge part 4b and the left edge part 4c of the base casing 4 (but excluding the support pins 7 and 7) and expands freely apart during expansion.

  In addition, on both sides of the curtain portion 5, cloth-like string members 8, 8 extending in the vertical direction are fixed by stitching.

  Specifically, as shown in FIG. 5, the string-like member 8 is formed of a cloth member having the same rigidity as or slightly higher than that of the cloth member of the curtain part 5, and the center of the side part of the curtain part 5. The upper end portion 8a and the lower end portion 8b are firmly fixed to the vicinity of the tension portion P and the vicinity of the tip portion Q at the lower end of the side portion.

  The length of the string-like member 8 is determined by the length of the expansion part 51 (52) on the side of the curtain part 5 that expands and expands downward. The length is set such that the upper end 8a side is engaged.

  The inflator 6 described above is installed at the upper end of the back door 1 so as to extend in the vehicle width direction. When the gas supply signal is received from the control means described above, the inflator 6 is provided in the expansion portions 51, 52, 53 of the curtain portion 5. In contrast, gas is supplied. The supplied gas is preferably a so-called low-temperature gas filled with a gas whose expansion coefficient does not change in order to maintain the tension of the curtain portion 5 for a long period of time. However, it may be a high-temperature gas generated by igniting a general solid material.

  On the gas ejection side of the inflator 6, a supply pipe 61 that supplies gas into the expansion portions 51, 52, 53 of the curtain portion 5 is provided.

  Note that the airbag sensor and the control means described above are generally known, and thus description thereof is omitted.

  Next, the structure of the support pin 7 and the string-like member 8 of the curtain airbag device 2 of the present embodiment will be described in detail.

  3 (a) and 3 (b) show the relationship between the support pin 7 and the string-like member 8 when the curtain portion 5 is stored and when it is deployed and inflated, respectively.

  When the curtain portion 5 is stored (A), the string-like member 8 is located on the outer side of the curtain portion 5 (the back window 3 side is the inner side), and the support pin 7 is placed on the lower end portion 8b side. It is located so as to surround the base casing 4 so as to be located in the back. On the other hand, when the curtain portion 5 is expanded and expanded (b), it moves to the lower side of the base casing 4 together with the curtain portion 5 and engages with the support pin 7 on the upper end portion 8a side.

  Thus, the string-like member 8 is configured to engage with the support pin 7 at different positions when the curtain portion 5 is stored and when it is deployed and expanded.

  As will be described later, this occurs when the string-like member 8 is pulled downward by the expansion force of the expansion portion 51 (52) as the tip Q of the curtain portion 5 moves downward. It is.

  The support pin 7 and the string-like member 8 are arranged on the opposite side of the curtain part 5 from the deployment direction of the curtain part 5 so that sliding resistance does not occur during movement (expanded and expanded). The member 8 is arranged and accommodated so that the positions thereof are not constrained to each other, and the string member 8 is configured to engage with the support pin 7 only when the expansion and expansion are completed.

  As shown in FIG. 4, the width t <b> 1 of the string-like member 8 is set to be smaller than the width t <b> 2 of the base casing 4 so that it can be easily detached from the state of being housed in the base casing 4. The curtain portion 5 is accommodated within the width t2 of the base casing 4.

  Further, the support pin 7 is made of a cylindrical shaft-shaped metal member, and has a both-end support structure in which both ends are penetrated with respect to the base casing 4 in order to increase support rigidity. Also, large-diameter boss portions 71 and 71 are formed at both ends of the support pin 7 so as not to easily fall off due to impact.

  In addition, you may comprise so that the string-shaped member 8 may be supported by the axial part of a volt | bolt using a volt | bolt and a nut instead of this support pin 7. FIG.

  The operation at the time of deployment and expansion of the curtain airbag device 2 of the present embodiment configured as described above will be described with reference to the schematic diagrams of FIGS. FIG. 6 is a schematic diagram showing the operation of the present embodiment, and FIG. 7 is a schematic diagram showing the operation of the conventional structure. In these schematic diagrams, the same components as those described above are denoted by the same reference numerals, and description thereof is omitted.

  In the conventional structure, as shown in FIG. 7, when the curtain part 5 is accommodated (A), the curtain part 5 'having the lengths of three sides (X + Y + Z) of the upper edge, the right edge, and the left edge is The length of the free end of the curtain part 5 must be increased. Therefore, at the time of expansion and expansion of the curtain part (b), in order to absorb the length (X + Y + Z) of the three sides with the length W of the remaining side, a plurality of large expansion parts 57 (air columns) are provided, and the curtain part 5 I was trying to get the tension.

  However, when the inflating part 57 is made large in this way, there is a problem that a large space for expanding and inflating the inflating part 57 is required in the vehicle interior, and a large amount of gas is supplied.

  For this reason, in this embodiment, as shown in FIG. 6, when the curtain portion is stored (A), the curtain portion 5 has the length (X + Y + Z) of the three sides, but the support pins 7, 7 as described above. And the string-like members 8 and 8 are configured to move the support positions (fixed positions) on both sides of the curtain portion 5, so that the leading end portion Q of the side portion of the curtain portion 5 can be obtained when the curtain portion is expanded and expanded (b). , Q expands and expands downward, the tension portions P, P connected by the string members 8, 8 are pulled downward, and the tension portions P, P move to the positions of the support pins 7, 7. To be configured.

  As a result, the tension can be obtained at a distance shorter than the length (X + Y + Z) of the three sides, ie, the length V from the right tension portion P to the left tension portion P, between the support pins 7 and W ′. .

  For this reason, in order to obtain the tension | tensile_strength of the curtain part 5, the amount of gas supplied to an expansion part can also be made small without providing a large expansion part.

  Therefore, according to the present embodiment, in the curtain airbag device 2 covering the large back window 3, tension can be generated in the curtain portion 5 without requiring a large inflatable portion or a large amount of gas.

  Further, as in this embodiment, the structure for moving the support position (fixed position) on the side of the curtain unit 5 is configured by the string-like members 8 and 8 and the support pins 7 and 7 so that the curtain can be configured with a simple configuration. The support position (fixed position) of the portion 5 can be changed, and rapid expansion and expansion are possible without causing sliding resistance as in the case of using a guide rail.

  Further, as shown in FIG. 1, the back window 3 of the present embodiment has a trapezoidal shape with a widening end, and the angle α formed by the upper edge 3a and both side edges 3b, 3c is set to an obtuse angle of about 95 ° on both sides. ing. For this reason, the base casing 4 also has a diverging shape in which the interval between the lower end portions is widened in the same manner, and the support pins 7 are also located on the outer side in the vehicle width direction. Therefore, the length between the tension portions P and P that generate the tension is longer than the length of the upper edge 3a, and the curtain portion 5 can easily generate the tension.

  Moreover, in this embodiment, since the string-like members 8 and 8 are installed in the back position of the base casing 4 on the outer side of the curtain part 5, the string-like member 8 when the curtain part 5 is expanded and expanded. Without impeding, the curtain portion 5 can be rapidly and surely expanded and expanded.

  Furthermore, the string-like member 8 has a belt shape and is set so as to slide in the gap between the support pin 7 and the base casing 4. Since it is pulled out, the direction of expansion and expansion of the curtain portion 5 can be defined, and a stable expansion and expansion state can be obtained.

  In addition, in this embodiment, as shown in FIG. 2, the height position of the support pin 7 is set below the height position of the center of the head H at the seating position of the occupant, so that the support pin is expanded and expanded. The tension line T formed between 7 and 7 is set to be positioned below the center of the head H. For this reason, at the time of a collision, etc., the movement of the passenger's head H in the vehicle outward direction can be reliably restrained, and the safety of the passenger can be improved.

  And in this embodiment, since the expansion parts 51 and 52 are provided in the curtain part 5 side part close | similar to the string-like members 8 and 8, the expansion force of the expansion parts 51 and 52 is immediately the string-like members 8 and 8. Is transmitted to. For this reason, the above-described movement of the string-like members 8 and 8 in the unfolding direction (downward direction) is accelerated, and the tension portion P can be moved to the vicinity of the support pin 7 earlier, and the curtain portion 5 can be reliably moved. Can be expanded and inflated.

  Further, in the present embodiment, the rear seat 9 is a three-seater, and it is necessary to protect three persons at the time of a collision or the like, but since the inflating portion 53 is also provided at the center of the curtain portion 5 in the vehicle width direction. The impact acting on the occupant's head H can be absorbed together with the inflatable portions 51 and 52 on both sides.

  Further, these inflating portions 51, 52, 53 are formed so as to extend in the vertical direction across the tension line T described above. For this reason, when the expansion parts 51, 52, and 53 expand, the apparent length of the tension line T can be shortened, and the tension can be reliably applied, and the tension in the tension line T can be further increased.

  In addition, in FIG. 8, the operation | movement schematic diagram at the time of providing the support pin 7 and the string-like member 8 only in one side (left side in drawing) is shown. As shown in this schematic diagram, it is possible to cover a substantially triangular window by providing the support pin 7 and the string-like member 8 only on one side.

  Even in this case, when the curtain part is stored (A), the curtain part 5 has the two side lengths (X + Y), but the support pin 7 and the string-like member 8 support the one side of the curtain part 5. Since the (fixed position) is configured to move, when the curtain part is expanded and expanded (b), it is connected by the string-like member 8 as the tip Q on one side of the curtain part 5 expands and expands downward. The tension portion P thus pulled is pulled downward, and the tension portion P moves to the position of the support pin 7.

  Thereby, also in this case, the length V from the tension portion P to the one end portion R between the support pin 7 and the other end portion R is shorter than the length (X + Y) of the two sides. You can get tension at a distance.

  Therefore, even when the triangular window is covered, tension can be generated in the curtain portion 5 without requiring a large expansion portion or a large amount of gas.

In addition, in this embodiment, it can apply also to the thing which provides a base casing in the lower end edge and right-and-left end edge of a back window, and a curtain part expand | deploys and expands upwards.
(Second embodiment)
Next, a second embodiment of the curtain airbag device of the present invention will be described with reference to FIG. This second embodiment is also a curtain airbag device 102 installed on the back door 1 of the vehicle as in the first embodiment. Note that the same components as those described above are denoted by the same reference numerals and description thereof is omitted.

  The curtain airbag device 102 is configured to reliably generate tension at the tension line T while the length of the curtain portion 105 in the vertical direction is shorter than that of the first embodiment.

  That is, the lower end portion 105a of the curtain portion 105 is positioned below the upper end 91a of the seat back 91 of the rear seat 9 without setting the curtain portion 105 to cover the entire back window 3 at the time of expansion. It is set.

  Thus, by setting the curtain portion 105, the curtain portion 105 itself can be configured to be small, and tension can be secured even if the gas amount is further reduced as compared with the first embodiment.

  Of course, in this case, the curtain portion 105 cannot cover the entire back window 3, but the curtain portion 105 covers at least the upper end portion of the seat back 91 when viewed from the rear of the vehicle, so that the movement of the occupant in the vehicle outward direction is suppressed. .

  Therefore, even in this case, the safety as the curtain airbag device 102 can be ensured without reducing the occupant restraining performance of the curtain airbag device 102.

In addition, about another effect, it is the same as that of above-mentioned 1st embodiment.
(Third embodiment)
Next, a third embodiment of the curtain airbag device of the present invention will be described with reference to FIG. The third embodiment is also a curtain airbag device 202 installed on the back door 1 of the vehicle as in the first and second embodiments. Note that the same components as those described above are denoted by the same reference numerals and description thereof is omitted.

  The curtain airbag device 202 is provided with a lower inflating portion 257 extending in the vehicle width direction at the lower portion of the curtain portion 205 and is set so that both ends of the lower inflating portion 257 are hooked on both side edges 32 and 33 of the back window 3. Further, tension is generated below the tension line T between the support pins 7 and 7.

  Thus, by generating a tension (tension line) extending further in the vehicle width direction below the tension line T, a force that moves the curtain portion 205 below the position of the support pins 7 and 7 toward the outside of the vehicle is obtained. Even if it acts, the curtain part 205 can stay in the vehicle reliably.

  Therefore, the occupant protection performance can be further enhanced by generating further tension in the lower portion of the curtain portion 5 in this way.

Other functions and effects are the same as those of the first embodiment.
(Fourth embodiment)
Next, a fourth embodiment of the curtain airbag device of the present invention will be described with reference to FIG. In the fourth embodiment, the structure for moving the support position (fixed position) on the side of the curtain part is changed to another structure, and FIG. 11 corresponds to FIG.

  The curtain airbag device 302 is formed with an ear 358 having a predetermined width at the side end of the curtain portion 305 instead of the string-like member so as to extend in the vertical direction, and a long hole 359 extending in the vertical direction on the ear 358. (Guide hole) is formed.

  The support pin 7 is engaged with the long hole 359 in the same manner as in the first embodiment, and the engagement position of the support pin 7 is changed in the vertical direction when the curtain portion 5 is stored and expanded (see FIG. And a tension is generated between the support pins 7 and 7 as in the above-described embodiment.

  For this reason, also in this embodiment, the amount of gas can be reduced without increasing the inflating portion, as in the above-described embodiment.

  In particular, in the case of this embodiment, a structure in which the support position (fixed position) of the curtain part 305 is moved by the ear part 358 integrated with the curtain part 305 is achieved. There is no need to provide a separate member, and productivity and cost can be improved.

Other functions and effects are the same as those of the first embodiment.
(Fifth embodiment)
Next, a fifth embodiment of the curtain airbag device of the present invention will be described with reference to FIG. The fifth embodiment is a curtain airbag device 402 installed on the periphery of the side window 410 on the side of the vehicle.

  In the vehicle in which the curtain airbag device 402 is installed, a front seat S1, a first rear seat S2, and a second rear seat S3 are installed in that order from the front side of the vehicle, and a front window 411 and a rear side are installed on the sides. A window 412 and a quarter window 413 are installed. An A-pillar 421, a B-pillar 422, a C-pillar 423, and a D-pillar 424 are installed from the front side between the windows, and a roof side panel 425 is installed above the windows 411, 412, and 413. .

  The base casing 404 of the curtain airbag device 402 is installed in a substantially gate shape on the A pillar 421, the roof side panel 425, and the D pillar 424 so as to surround the plurality of windows 411, 412, and 413.

  The base casing 404 stores a folded curtain portion 405 as in the first embodiment. The curtain portion 405 receives gas from the inflator 406 installed on the D pillar 424 so as to expand and expand. It is configured.

  FIG. 12 shows the expanded state of the curtain portion 405.

  In the side part (vehicle front side part, rear side part) of the curtain part 405 of this embodiment, string-like members 8 and 8 are provided similarly to the first embodiment, and the side lower end part of the base casing 404 is provided. Is provided with support pins 7 and 7 so that the string-like members 8 and 8 are engaged with the support pins 7 and 7.

  The string-like members 8 and 8 are connected at their upper ends to a tension portion P located at the intermediate portion of the curtain portion 405 and are connected at their lower ends to a tip portion Q located near the support pins 7 and 7 (drawing). The positions indicated by (P) and (Q) are stored positions).

  Then, the cord-like members 8 and 8 move the tension portion P to the positions of the support pins 7 and 7 by the downward movement of the tip portion Q and engage the support pins 7 and 7 during deployment and expansion.

  In such a configuration, when an airbag sensor (not shown) provided on the pillar portion (B pillar 422, C pillar 423) of the vehicle detects an impact from the side surface of the vehicle, or an airbag comprising a roll angle sensor. When a sensor (not shown) detects the rollover of the vehicle (prediction), the curtain unit 405 is expanded and expanded by a control unit (not shown).

  Thereby, the tension line T which generate | occur | produces tension between the support pins 7 and 7 is formed like 1st embodiment.

  In particular, in this embodiment, since a plurality of windows 411, 412, and 413 are covered with one curtain portion 405, it is difficult to generate tension if the structure does not move the fixed position of the curtain portion. Since the tension portion P is moved to the position of the pins 7 and 7, tension can be easily generated.

  Further, the curtain portion 405 includes side inflating portions 451 and 452 that expand and inflate the lower side portion of the side of the curtain portion 405 downward, and a central inflating portion that inflates in accordance with the position of each occupant's head. 453 and 454, and a communication inflating portion 455 that communicates these inflating portions at the top, and a deployment portion 456 is provided between these inflating portions.

  Among these, as shown in FIG. 12, the central inflating portions 453 and 454 are arranged such that the front central inflating portion 453 is located at the rear edge of the B pillar 422, the lower edge of the front window 411, and the lower edge of the rear window 412. Inflatable portions 454 are formed at positions where they overlap with the C pillar 423, the lower edge portion of the rear window 412, and the lower edge portion of the quarter window 413, respectively.

  For this reason, the tension of the curtain portion 405 is further increased because the inflating portion is caught by the B pillar 422 and the C pillar 423. Therefore, even if it is a big curtain part, higher tension can be obtained.

  Further, as shown in FIG. 12, the central inflating portions 453 and 454 and the side inflating portion 452 located on the vehicle rear side are provided at positions corresponding to the head H of the occupant. The impact absorbing performance of the portion H can also be enhanced.

  Further, a tension line T connecting the support pins 7 is also formed below the head H of the occupant. For this reason, the movement of the occupant's head H in the vehicle exterior direction can also be suppressed, and the occupant's restraining performance can be enhanced.

In addition, about another effect, it is the same as that of the above-mentioned embodiment.
(Sixth embodiment)
Next, a sixth embodiment of the curtain airbag device of the present invention will be described with reference to FIGS. The sixth embodiment is a curtain airbag device 502 installed on the periphery of a glass roof window 501 at the top of a vehicle. FIG. 13 is a plan view of a vehicle in which the curtain airbag device 502 is installed, and FIG. 14 is a cross-sectional view taken along line BB in FIG.

  The curtain airbag device 502 activates the curtain portion to cover the glass roof window 501 when the vehicle rollover is detected or predicted by an airbag sensor (not shown), and suppresses movement of an occupant or the like in the outward direction of the vehicle. To do.

  The glass roof window 501 is installed at the center position of the roof 503 of the vehicle, specifically, above the front seat occupant H1 and the first rear seat occupant H2. Is visible. Note that. FIG. 13 shows a state where the curtain portion is expanded and expanded.

  The curtain airbag device 502 is provided with two inflators 506 and 506, curtain portions 505 and 505, and base casings 504 and 504, and the two curtain portions 505 and 505 are connected to the glass roof window 501. The glass roof window 501 is covered by expanding and inflating each inward.

  One inflator 506, 506 is installed on the vehicle front side of the glass roof window 501, and the other is installed on the vehicle rear side. In addition, one of the base casings 504 and 504 is installed across the front edge 501a and the left edge 501b of the glass roof window 501, and the other is installed on the rear edge 501c and the right edge 501d of the glass roof window 501. It is installed across.

  The base casings 504 and 504 accommodate curtain portions 505 and 505 that are substantially triangular when expanded.

  The curtain portion 505 is provided with inflating portions 551, 552, and 553 that are inflated by the gas supplied from the inflator 6 on both sides and in the center, and a developing portion 554 is provided between them. Shaped members 8, 8 are provided.

  The string-like members 8 and 8 are configured to engage with the support pins 7 and 7 formed at both ends of the base casing 504, respectively, as in the above-described embodiment, and the curtain portion 505 is expanded and expanded. In some cases, the tension portions P and P of the curtain portion 505 are moved to the positions of the support pins 7 and 7 and engaged with the support pins 7 and 7.

  Further, the curtain portion 505 is configured such that the two curtain portions 505 are superposed at the center of the glass roof window 501 in the deployed and expanded state.

  For this reason, as shown in FIG. 13, the leading end sides 552a and 552a of the expansion portions 552 and 552 of the curtain portions 505 and 505 are made thin (thickness U1), and the two curtain portions 505 and 505 interfere as much as possible during expansion I try not to.

  However, since it is necessary to improve the shock absorbing performance of the occupant's head H, the portion corresponding to the occupant's head H is configured to have a certain thickness (thickness U2).

  Moreover, in order to avoid the interference at the time of expansion and expansion, the curtain portion 505 located on the upper side is configured to expand and expand in advance.

  By adopting such a configuration, even when the two curtain portions 505 and 505 are deployed and expanded from the direction facing each other, it is possible to prevent the interference between the two and to ensure appropriate occupant protection performance.

  Thus, also in this embodiment, by providing the string-like members 8 and 8 and the support pins 7 and 7, the support position (fixed position) of the curtain portions 505 and 505 is moved, and tension is easily generated. I am doing so.

  Therefore, also in the curtain airbag device 502 installed on the periphery of the glass roof window 501, it is possible to reliably generate tension at the time of deployment and expansion, and to improve the occupant protection performance.

In addition, about another effect, it is the same as that of the above-mentioned embodiment.
(Seventh embodiment)
Next, a seventh embodiment of the curtain airbag device 602 of the present invention will be described with reference to FIG. The seventh embodiment is also a curtain airbag device 602 installed on the periphery of the glass roof window 501 at the top of the vehicle.

  Unlike the above-described sixth embodiment, the curtain airbag device 602 includes an inflator 606, a curtain part 605, and a base casing 604, and the glass roof window 501 is composed of a single curtain part 605. It is comprised so that it may cover.

  Specifically, a base casing 604 is installed in a substantially U shape on the front edge 501a, left edge 501b, and left edge 501c of the peripheral edge of the glass roof window 501, and is folded inside the base casing 604. An inflator 606 that houses the curtain portion 605 in a state and supplies gas to the curtain portion 605 is installed on the vehicle front side of the base casing 604.

  FIG. 15A shows a state where the curtain portion 605 is expanded and expanded.

  The string members 8 and 8 are provided on both side ends of the curtain portion 605 as in the above-described embodiment, and the support pins 7 and 7 are provided on both ends of the base casing 604 in the same manner as in the above-described embodiment. Further, the support position (fixed position) of the curtain portion 605 is moved to the vehicle rear side due to the expansion of the expansion portions 651 and 652, as in the above-described embodiment. Further, in this embodiment, the curtain portion 605 is fixed to the casing 604 on the front side of the vehicle from the point P in FIG.

  In this embodiment, the shape of the curtain portion 605 is configured to be different from the curtain portion of the above-described embodiment.

  That is, as shown in FIG. 15 (a), only the expansion portions 651 and 652 on the side of the curtain portion 605 located in the vicinity of the string-like members 8 and 8 are greatly extended to the rear, and the other expansion portions 653 are deployed. About the part 654, it forms as the curtain part 605 set to the extent which covers the glass roof window 501 in the expansion | deployment expansion state.

  By configuring in this way, the side expansion portions 651 and 652 can be used not only as a promotion means for moving the fixing position (supporting position) of the curtain portion 605, but also the expansion portions 651 and 652 can be used. It is also possible to use the rear side as an impact absorbing member. Further, the size of the curtain portion 605 can be made compact, and the effect that the storage property can be further improved can be obtained.

  Therefore, in the present embodiment, as in the above-described embodiment, in addition to the effect that tension can be generated even if the inflating portion is made small and the amount of gas is reduced, the inflating portions 651 and 652 are more reliably generated. The curtain portion 605 can be moved at a fixed position, and the storage space can be made compact.

Other functions and effects are the same as those in the above-described embodiment.
(Eighth embodiment)
Next, an eighth embodiment of the curtain airbag device 2 of the present invention shown in FIG. The eighth embodiment is also a curtain airbag device 702 installed on the periphery of the glass roof window 501 at the top of the vehicle.

  As in the seventh embodiment, this curtain airbag device 702 includes an inflator 706, a curtain portion 705, and a base casing 704, and a glass roof window 501 at the top of the vehicle is formed by a single curtain portion 705. It is comprised so that it may cover.

  However, this curtain airbag device 702 is provided with the string-like member 8 on one side of the curtain portion 705, and the support pin 7 is installed only at one end portion of the base casing 704. It consists of a bag device.

  As described above, since only one side portion of the curtain portion 705 is moved by the expansion and expansion of the expansion portion 751, only one side portion is moved as compared with the sixth and seventh embodiments. Since the expansion force is sufficient, the curtain portion 705 can be expanded and expanded without increasing the size of the expansion portion 751.

  Therefore, the gas amount of the inflator 706 can be reduced, and the curtain portion 705 can be configured compactly.

  Therefore, according to this embodiment, the tension of the curtain portion 705 can be improved with a relatively inexpensive configuration.

  In addition, about another effect, it is the same as that of the above-mentioned embodiment.

As described above, in the correspondence between the configuration of the present invention and the above-described embodiment,
The window of the present invention corresponds to the back window 3, the front window 411, the rear window 412, the quarter window 413, and the glass roof window 501 of the embodiment.
Hereinafter, similarly, the gas supply means corresponds to the inflators 6,406, 506, 606, 706,
The tip side corresponds to the tip Q,
The support portion corresponds to the support pin 7,
The present invention is not limited to the above-described embodiments, but includes embodiments applied to all curtain airbag devices.

  For example, it may be a curtain airbag device used in buildings, airplanes, trains, ships, spacecrafts, space stations, etc. other than vehicles, and the shape of the window may be triangular, quadrangular, pentagonal, and curvature. It may be a circle having

  Furthermore, you may comprise so that the tension | tensile_strength part of a curtain part may be supported using a support hook, a support hole, etc. instead of a support pin. Further, the axial direction of the support pin may be not only a direction orthogonal to the direction of expansion and expansion of the curtain portion but also may be parallel or inclined.

  Moreover, the shape of the string-like member may be a rope shape, a belt shape, or the like, and is not particularly limited.

The rear view of the vehicle which showed the curtain airbag apparatus of the accommodation state of this invention. The rear view of the vehicle which showed the curtain airbag apparatus of the expansion | deployment state. (A) The principal part detailed drawing of the support pin in a stowed state, (B) The principal part detailed drawing of the support pin in a deployment expansion state. FIG. 4 is a cross-sectional view taken along line AA in FIG. The principal part perspective view which showed the curtain part side part. The schematic diagram which showed the action | operation of this embodiment, (A) The accommodation state (B) The expansion | deployment expansion state. The schematic diagram which showed the operation | movement of the conventional structure, (a) The accommodation state (b) The expansion | deployment expansion state. The operation schematic diagram when a support pin and a string-like member are provided only on one side, (a) stored state (b) deployed and expanded state. The rear view of the vehicle which showed 2nd embodiment. The rear view of the vehicle which showed 3rd embodiment. The principal part perspective view which showed the curtain part side part of 4th embodiment. The side view of the vehicle which showed 5th embodiment. The top view of the vehicle which showed 6th embodiment. FIG. 14 is a cross-sectional view taken along line BB in FIG. 13. (A) The top view which showed 7th embodiment, (B) The top view which showed 8th embodiment.

Explanation of symbols

P: Tension part Q: Tip part (tip side part)
T ... Tension line 3 ... Back window (wind)
5, 105, 205, 305, 405, 505, 605, 705 ... Curtain part 6,406, 506, 606, 706 ... Inflator (gas supply means)
7 ... Support pin (support part)
8 ... string-like members 51, 52, 53, 451, 452, 453, 454, 551, 552, 553, 651, 652, 653, 751 ... expansion part 358 ... ear part 359 ... long hole 411 ... front window (wind)
412 ... Rear window (wind)
413 ... Quarter window (wind)
501 ... Glass roof window (wind)

Claims (10)

A curtain portion that is housed in the first side and the second side of the peripheral portion of the window portion in the stowed state, and expands and expands so as to cover the window portion in the deployed and expanded state;
In a curtain airbag device comprising gas supply means for supplying gas to an inflated part formed in the curtain part so that the curtain part is deployed and inflated in a predetermined state,
The curtain portion is in a retracted state, and a distal end side portion located on the distal end side in the deployment direction at the time of deployment / expansion is located in the vicinity of a support portion provided on the second side separated from the first side, and is supported at the time of deployment / expansion. The tension part located in the vicinity of the part is stored so as to be close to the first side,
A curtain configured such that, when deployed and inflated, the distal end side portion moves in the deploying direction due to the expanding force of the expanding portion, and the tension portion moves to the vicinity of the support portion and engages with the support portion. Airbag device. Curtain that is housed in the first side located at the center and the second and third sides located on both sides of the peripheral edge of the window portion in the stowed state, and expands and inflates to cover the window portion in the unfolded and expanded state And
In a curtain airbag device comprising gas supply means for supplying gas to an inflated part formed in the curtain part so that the curtain part is deployed and inflated in a predetermined state,
The curtain portion is in a stored state, and a second side support provided on a second side spaced from the first side by a second side side tip side portion positioned on the front side in the deployment direction on the second side during deployment and expansion. The vicinity of the second side support portion provided on the second side spaced from the first side, the third side side tip portion side positioned in the vicinity of the first portion and positioned at the front end side in the deployment direction on the third side during deployment and expansion And located in
The second side tension part located near the second side support part during expansion and expansion is close to the first side, and the third side side tension located near the third side support part during deployment and expansion. Part is stored so as to be close to the first side,
At the time of expansion, the second side side tip side and the third side side tip side move in the respective deployment directions by the expanding force of the expansion part, and the second side side tension part and the first side Curtain airbag configured such that the three side tip end portions move to the vicinity of the second side support portion and the third side support portion, respectively, and are engaged with the second side support portion and the third side support portion. apparatus. The curtain airbag device according to claim 1 or 2, wherein an angle formed by each side is set to an obtuse angle. The distal end side portion and the tension portion are connected by a string-like member,
The curtain airbag device according to claim 1, wherein the string-like member is routed so as to be positioned on a side away from the first side with respect to the support portion. The curtain airbag device according to claim 4, wherein the string-like member is installed at an outer position of the curtain portion when the curtain portion is stored. The distal end side portion and the tension portion are connected by an ear portion having a long hole extending in a deployment direction,
The curtain airbag device according to claim 1, wherein the support portion is engaged with the long hole of the ear portion. The window portion is a vehicle window portion;
The curtain airbag device according to claim 1, wherein the predetermined state is a vehicle collision time, a collision prediction time, or a rollover determination time. The curtain airbag device according to claim 7, wherein a tension line of the curtain portion formed by the support portion when the curtain portion is deployed and inflated is set so that a head center of an occupant is positioned on the first side. The curtain airbag device according to claim 1, wherein the inflatable portion is formed in the vicinity of the tension portion. The curtain airbag device according to claim 1, wherein the inflatable part is formed on a tension line of a curtain part formed by the tension part.

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