JP5948049B2 - Side airbag device - Google Patents

Description

  The present invention relates to a side airbag device installed in a vehicle in order to protect an occupant particularly in a side collision.

  In particular, a side airbag device that protects an occupant from an impact on a side surface of a vehicle at the time of a side collision is generally installed inside a side of a seat back portion (hereinafter referred to as a seat back).

  This side airbag device is configured to generate gas by operating an inflator by power supplied from a harness connected to a battery in the event of a vehicle collision, and the side airbag is deployed by the generated gas.

  The side airbag device having such a configuration is covered with a cloth cover, and the harness is restrained by the inflator so that a connection failure between the harness and the inflator does not occur.

  As a manner of restraining the harness to the inflator, there is proposed a structure in which a harness restraint clamp cover is further provided outside the cloth cover for housing the inflator and the folded side airbag (patent). Reference 1).

  The structure proposed in Patent Document 1 has a reduced number of parts compared to a structure in which a clamp member is attached to the frame of the seat back described in the prior art and the harness is fixed, thereby reducing the cost.

  However, in the case of the structure proposed in Patent Document 1, welding is necessary when the clamp cover is formed, and the structure is slightly complicated, such as forming separately from the cover so that the harness passes through the clamp cover. Moreover, since the harness only passes through the clamp cover, there is a problem that it is difficult to accurately define the restraining position of the harness.

JP 2004-291887 A

  The problem to be solved by the present invention is that there is room for improvement with respect to simplification of the structure and prescribing of the harness restraint position in the restraint structure of the harness constituting the conventional side airbag device. is there.

  The present invention has been made to solve the above problems. That is, in the present invention, the restraint structure of the conventional harness to the inflator is made simpler so that the cover can be easily formed, and the restraint position of the harness can be accurately defined. It is a solution.

That is, the side airbag device of the present invention is
Side airbags,
An inflator for supplying gas to the side airbag;
A harness for supplying power to the inflator to generate a gas for deploying the folded side airbag at the time of a vehicle collision;
A cloth cover covering the side airbag and the inflator in a folded state;
A side airbag device comprising:
The cover is formed in a cross shape so as to cover most of the side airbag and the inflator by folding in the same direction, and a notch for forming a restraining piece for restraining the harness led out from the cover is formed in the cross. In the center of the shape ,
The restraint piece has a skirt portion substantially parallel to the longitudinal direction of the folded side airbag, and is spaced from the skirt portion by a predetermined distance in a short side direction perpendicular to the longitudinal direction of the side airbag. The main feature is that the side airbag has a shape with a top portion whose length in the longitudinal direction is shorter than the length of the skirt portion.

  In the present invention, since the restraint piece of the harness is formed with a simple configuration in which a notch is provided in a part of the cover, the cover and the restraint piece can be easily formed. Moreover, since it restrains by restraining with a restraining piece instead of letting it pass through a through-hole, the restraint position of a harness can be prescribed | regulated correctly.

  In the present invention, the restraint piece can be restrained with a small label because the longitudinal length of the top side airbag is shorter than the length of the skirt portion.

  In the present invention, since the restraint piece for restraining the movement of the harness is formed with a simple configuration in which only a cut is provided in a part of the cover, a complicated process such as welding is not required for forming the restraint piece. Can be easily formed.

  Further, in the present invention, the restraint position is restrained by pressing with the restraining piece instead of passing through the through hole, so that the restraining position of the harness can be accurately defined by the shape of the cut and the label attaching position.

  In the present invention, since the length of the restraint piece in the longitudinal direction of the top side airbag is shorter than the length of the skirt portion, the restraint piece can be restrained with a small label.

It is explanatory drawing of the side airbag apparatus of this invention, (a) is before an assembly, (b) (c) is during an assembly, (d) is a figure which shows after an assembly. It is explanatory drawing of the notch which forms the restraint piece of the cloth cover which is a component of the side airbag apparatus of this invention, (a) is the state which opened the restraint piece, (b) is the figure of the state which closed the restraint piece. is there. It is a cross-sectional view of FIG.1 (d). (A) (b) (c) is explanatory drawing of the other example of the notch | incision which forms the restraint piece of the cloth cover which is a component of the side airbag apparatus of this invention. It is the figure which showed the other example of the cloth covers which are the components of the side airbag apparatus of this invention, (a) is the perspective view seen from the surface side, (b) is the perspective view seen from the back surface side.

  In the structure where the harness is passed by providing a clamp cover for restraining the harness outside the fabric cover that houses the inflator and the folded side airbag, there is room for improvement in terms of simplification of the structure and accurate regulation of the harness restraint position. is there.

  This invention solves the said subject by forming the restraint piece of a harness with the simple structure which only provides a notch in a part of cover.

  The present invention will be described below with reference to the accompanying drawings. 1-3 is a figure explaining an example of the side airbag apparatus of this invention.

  Reference numeral 1 denotes a side airbag device installed inside the side of the seat back. In the case of a side collision, the side airbag 2 is deployed in the vehicle forward direction between the occupant seated on the seat and the side of the vehicle to protect the occupant. To do.

  The side airbag device 1 includes a side airbag 2, an inflator 3 that supplies gas to the side airbag, a harness 4 that supplies power to the inflator 3 in the event of a collision, and a cover that covers the folded side airbag 2 and the inflator 3. 5.

  The side airbag 2 is formed, for example, by sewing the entire periphery of two base fabrics into a bag shape, and the inflator 3 is placed in the side airbag 2 with the side airbag 2 standing in the longitudinal direction. It is built in so as to be wrapped.

  The inflator 3 has a cylindrical shape as shown in FIGS. 1 and 3, for example, and has a configuration in which gas is jetted into the side airbag 2 from a jet port provided on one end face or side face thereof. Two fixing bolts 3a for fixing protrude from the side surface of the inflator 3 at an appropriate interval in the longitudinal direction, and are attached to the frame at the side end portion of the seat back by these bolts 3a.

  Further, one end of the harness 4 is connected to the other end surface of the inflator 3, and in the event of a collision, power is supplied from the battery to the inflator 3, and the gas generating agent filled therein is ignited through the ignition agent. .

  The cover 5, for example, folds the protruding portion 5 a of a nonwoven fabric formed in a cross shape as shown in FIG. 1A in the same direction, so that most of the side airbag 2 and the inflator 3 in a folded state are It is something to cover. Here, “mostly cover” means that a part of the side airbag 2 or the inflator 3 may be visible from the gap 5b of the cover 5 (see, for example, FIG. 1B).

  At this time, as shown in FIG. 1B, the harness 4 is led out of the cover 5 through a gap 5b formed during folding.

The main feature of the present invention is that the restraint piece 5c for restraining the harness 4 led out from the cover 5 is formed simply by providing a predetermined cut 5d at the cross-shaped central portion 5g of the cover 5. It is.

  The constraining piece 5c formed by the cut 5d is, for example, in a folded state so that the base portion 5ca thereof is substantially parallel to the longitudinal direction of the side airbag 2 in the folded state (the direction of arrow A in FIG. 1A). The side airbag 2 is provided in the vicinity of one side.

  And it forms by cut | disconnecting from the base part 5ca to the top part 5cb of the position which left | separated only the predetermined distance to the short side direction (arrow B direction of Fig.1 (a)) perpendicular | vertical to the longitudinal direction of the said side airbag 2. .

  For example, the example shown in FIG. 1 cuts in a straight line from the base portion 5ca to the top portion 5cb, the top portion 5cb is a side substantially parallel to the longitudinal direction of the side airbag 2, and its length L2 is the base portion. The trapezoidal restraint piece 5c is shorter than the length L1 of 5ca.

  In the case of the cover 5 in which the constraining piece 5c is formed by such a cut 5d, the harness 4 led out from the gap 5b of the cover 5 is guided to the other end side of the inflator 3 (see FIG. 1C), and then constrained. The harness 4 is restrained by pressing with the piece 5c (see FIG. 1D).

  For example, a label 6 is used for pressing the harness 4 by the restraining piece 5c. The label 6 is such that the length L3 of the side airbag 2 in the longitudinal direction is longer than the length L2 of the top portion 5cb of the restraining piece 5c in the longitudinal direction of the side airbag 2.

  If such a label 6 is used, the harness 4 can move only within a range A between the skirt portion 5 ca of the restraining piece 5 c and the label 6.

  Therefore, the restraint position of the harness 4 can be accurately defined, for example, in the vicinity of the end point 5caa of the skirt portion 5ca by the label 6 application position. In the example of FIGS. 1 to 3, a circular hole 5e is provided at the cut end portion of the end point 5caa of the skirt portion 5ca so that stress is not concentrated on the cut end portion of the restraining piece 5c during pressing. In addition, 5f shown to Fig.1 (a) is the penetration hole of the volt | bolt 3a of the inflator 3. As shown in FIG.

  As described above, in the side airbag device 1 of the present invention, the restraint piece 5c that restrains the movement of the harness 4 is formed with a simple configuration in which the notch 5d is provided in a part of the cover 5. Therefore, a complicated process such as welding is not required for forming the constraining piece 5c, and the cover 5 and the constraining piece 5c can be easily formed.

  In addition, since the harness 4 is restrained by being restrained by the restraining piece 5c, the restraining position of the harness 4 can be accurately defined by the shape of the cut 5d and the label 6 attachment position. At that time, the harness 4 can be restrained by the small label 6.

  The present invention is not limited to the above example, and it goes without saying that the embodiments may be changed as appropriate within the scope of the technical idea described in each claim.

  That is, the side airbag device described above is a preferable example of the present invention, and other embodiments can be implemented or performed by various methods. In particular, the present invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless specifically limited.

  For example, the top 5cb of the restraining piece 5c formed on the cover 5 does not have a side substantially parallel to the longitudinal direction of the side airbag as shown in FIGS. 1 to 3 as shown in FIG. It may be a point. In this case, the restraining piece 5c has a triangular shape. Further, the cut line from the skirt portion 5ca to the top 5cb of the restraint piece 5c includes a curve as shown in FIGS. 4B and 4C, even if it is not a straight line as shown in FIGS. It may be a thing. Moreover, as shown in FIG. 4, the circular hole 5e does not need to be provided at the cut end of the end point 5caa of the skirt portion 5ca of the restraining piece 5c.

Also, the cover 5 is not limited to the one in which the cross-shaped non-woven fabric is bent as shown in FIGS. 1 to 3, but may be one formed as a bag by sewing both ends as shown in FIG. In this case, a constraining piece 5c is formed by providing a notch 5d in a portion extending from a lid portion 5h formed by extending a part of the cover 5 formed in a bag shape to the bag-shaped cover 5 portion. Further, as long as it is made of cloth, it may be a non-woven fabric or a woven fabric.

DESCRIPTION OF SYMBOLS 1 Side airbag apparatus 2 Side airbag 3 Inflator 4 Harness 5 Cover 5c Restraint piece 5ca Bottom part 5caa End point 5cb Top part 5d Cut 5e Hole
5g center
5h lid 6 label

Claims (10)

Side airbags,
An inflator for supplying gas to the side airbag;
A harness for supplying power to the inflator to generate a gas for deploying the folded side airbag at the time of a vehicle collision;
A cloth cover covering the side airbag and the inflator in a folded state;
A side airbag device comprising:
The cover is formed in a cross shape so as to cover most of the side airbag and the inflator by folding in the same direction, and a notch for forming a restraining piece for restraining the harness led out from the cover is formed in the cross. In the center of the shape ,
The restraint piece has a skirt portion substantially parallel to the longitudinal direction of the folded side airbag, and is spaced from the skirt portion by a predetermined distance in a short side direction perpendicular to the longitudinal direction of the side airbag. A side airbag device characterized in that the side airbag has a shape with a top portion whose length in the longitudinal direction is shorter than the length of the skirt portion.   The side airbag device according to claim 1, wherein a top portion of the restraining piece has a side substantially parallel to a longitudinal direction of the side airbag.   The side airbag device according to claim 1, wherein the top of the restraining piece is a point.   The side airbag device according to any one of claims 1 to 3, wherein the cut is formed by a cut line including a curve from a base portion to a top portion of the restraint piece.   The side airbag device according to any one of claims 1 to 4, wherein a circular hole is provided at a cut end portion at an end point of the skirt portion of the restraint piece.   The side airbag device according to any one of claims 1 to 5, wherein the skirt portion of the restraining piece is provided in the vicinity of one side of the folded side airbag.   The side airbag device according to any one of claims 1 to 6, wherein the harness is constrained so as to pass in the vicinity of an end point of a skirt portion of the constraining piece.   The side airbag device according to any one of claims 1 to 7, wherein a label that covers at least the top of the restraining piece is stuck on the cover.   The side airbag device according to claim 7, wherein a length of the label in the longitudinal direction of the side airbag is longer than a length of the side airbag in the top portion of the restraining piece. Side airbags,
An inflator for supplying gas to the side airbag;
A harness for supplying power to the inflator to generate a gas for deploying the folded side airbag at the time of a vehicle collision;
A cloth cover covering the side airbag and the inflator in a folded state;
A side airbag device comprising:
The cover is formed in a bag shape in which both ends are sewn so as to cover most of the side airbag and the inflator, and a notch for forming a restraining piece for restraining the harness led out from the cover is formed in the bag shape. Provided in a part extending from the cover part formed by extending a part of the cover formed to the bag-like cover part,
The restraint piece has a skirt portion substantially parallel to the longitudinal direction of the folded side airbag, and is spaced from the skirt portion by a predetermined distance in a short side direction perpendicular to the longitudinal direction of the side airbag. A side airbag device characterized in that the side airbag has a shape with a top portion whose length in the longitudinal direction is shorter than the length of the skirt portion.

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