JP2010523399A - Apparatus and method for controlling an inflatable cushion - Google Patents

Abstract

In a control device for modifying the deployment characteristics of an inflatable cushion of an airbag module, the control device is a releasable holding device, and the first end of the releasable holding device is inflatable When the releasable retaining device is releasably secured to the first position of the inner surface of the cushion and is releasable secured to the first position of the inflatable cushion, the releasable retaining device is inflatable. A releasable retaining device configured to limit deployment of the cushion in a first direction and a sensing device for releasing the releasable retaining device from the first position, the sensing device comprising: The sensing device is fixedly secured to a second position of the inner surface of the inflatable cushion away from the first position and releasably secured to a releasable retaining device. The first When the position of the sensor is moved a predetermined distance during inflation, the releasable retaining device is configured to release from the first position, and one end is secured to the inner surface of the inflatable cushion. A vent string that can be vented through at least one vent opening when a releasable retaining device is secured to the inner surface of the inflatable cushion. And a vent string that is configured such that when the releasable holding device is released from the inner surface of the inflatable cushion, at least one vent opening is covered by the vent string It is equipped with.
[Selection] Figure 3

Description

  The present invention generally relates to vehicle airbags or inflatable cushions. More specifically, the present invention relates to a system and method for controlling deployment of an inflatable cushion of an airbag module.

  Airbag modules are common in modern cars. Airbag modules typically include an inflatable cushion and inflator in the housing. Modules are mounted at desired locations in the vehicle, such as, for example, steering wheels, dashboards, seats, vehicle doors, A-pillars, and other locations. The inflatable cushion is stored in fluid communication with the inflator in a folded state within the housing. In response to the activation event or event, the sensor provides a signal to activate the inflator. The inflator supplies inflation gas to the cushion to inflate the cushion and deploy the cushion from the housing into the vehicle.

  Various methods have been employed to link the inflation level of an inflatable cushion to a particular condition. As such, it would be desirable to provide an inflatable cushion and / or device or system for controlling the deployment of an inflatable cushion in response to proximity to the inflatable cushion being deployed. It is rare.

Disclosed herein is an apparatus and method for manipulating the deployment characteristics of an inflatable cushion of an airbag module.
In one exemplary embodiment, a control device is provided that modifies the deployment characteristics of an inflatable cushion of an airbag module, the control device being a releasable retaining device, the releasable retaining device. The first end is releasably secured to a first position on the inner surface of the inflatable cushion, and the releasable retaining device is secured to the first position of the inflatable cushion The releasable retaining device is configured to limit deployment of the inflatable cushion in the first direction and releases the releasable retaining device and the releasable retaining device from the first position. And a releasable retaining device releasably secured to a releasable retaining device, wherein the sensing device is fixedly secured to a second position on the inner surface of the inflatable cushion away from the first position. And sensing equipment A sensing device configured to release the releasable retaining device from the first position when the second position of the inflatable cushion moves a predetermined distance during inflation, and one end inflated A vent string that is secured to the inner surface of the cushion, the vent string being at least one vent when the releasable retaining device is secured to the inner surface of the inflatable cushion. When the releasable holding device can be evacuated through the opening and released from the inner surface of the inflatable cushion, at least one bleed opening is configured to be covered by the bleed tie. A tether for evacuation.

  In another exemplary embodiment, an airbag module is provided, the airbag module having a housing having at least one vent opening and an inflation configured to deploy from the housing. An inflatable cushion, an inflator for inflating the inflatable cushion, in fluid communication with the inflatable cushion, and a releasable retaining device, the first of the releasable retaining device The end is releasably secured to a first position on the inner surface of the inflatable cushion, and the releasable retaining device is secured to the first position of the inflatable cushion. The releasable retaining device is configured to limit the deployment of the inflatable cushion in the first direction and the releasable retaining device, A sensing device for releasing a possible retaining device from a first position, wherein the sensing device is fixedly secured to a second position on the inner surface of the inflatable cushion, away from the first position. , Releasably secured to the releasable retainer, and the sensing device moves the releasable retainer to the first position when the second position of the inflatable cushion moves a predetermined distance during inflation. A venting tether that is configured to release from the sensing device and an inner surface of the inflatable cushion at one end and fixed to the housing at the other end, the venting tether being released When the retainer is secured to the inner surface of the inflatable cushion, the air can be evacuated through the at least one vent opening and the releasable retainer is released from the inner surface of the inflatable cushion. And a little Kutomo one degassing opening is configured to be covered by the cord connecting for evacuating comprises a string tie for degassing, the.

  In another exemplary embodiment, a method is provided for restricting deployment of an inflatable cushion in a first direction, the method including a releasable retaining device on an inner surface of the inflatable cushion. The releasable retaining device is secured to the first position of the inflatable cushion when the releasable retaining device is secured to the first position of the inflatable cushion. Securing the releasable retainer, wherein the releasable retainer is configured to limit deployment in a direction and the releasable retainer is secured in a first position by an engagement member of the sensing device; A portion of the sensing device, fixedly secured to a second position on the inner surface of the possible cushion, away from the first position, moves a predetermined distance during inflation and the engagement member is releasable Once removed from the holding device Releasing the removable holding device from the first position; and venting the inflatable cushion inflation gas until the releasable holding device is released from the first position. .

  These and other features of the present application will be apparent to those skilled in the art from the following detailed description, drawings, and claims.

FIG. 3 is a partial view of the interior of the vehicle showing the inflatable cushion of the passenger side airbag module in the retracted or undeployed state. 1 is a partial view of an interior of a vehicle showing a cross-sectional view of an inflatable cushion deployed in the presence of an obstruction with a control device constructed in accordance with one exemplary embodiment of the present invention. 1 is a partial view of a passenger compartment showing a cross-sectional view of an inflatable cushion deployed without an obstruction with a control device constructed in accordance with one exemplary embodiment of the present invention. FIG. 2 illustrates a control device according to one exemplary embodiment of the present invention. FIG. 2 illustrates a control device according to one exemplary embodiment of the present invention. FIG. 2 illustrates a control device according to one exemplary embodiment of the present invention. FIG. 4 is a diagram of a releasable retaining member of a control device according to one exemplary embodiment of the present invention. FIG. 4 is a diagram of a releasable retaining member of a control device according to one exemplary embodiment of the present invention. FIG. 4 is a diagram of a releasable retaining member of a control device according to one exemplary embodiment of the present invention. FIG. 4 is a diagram of a releasable retaining member of a control device according to one exemplary embodiment of the present invention. FIG. 4 is a diagram of a releasable retaining member of a control device according to one exemplary embodiment of the present invention. FIG. 6 illustrates a controller according to an alternative exemplary embodiment of the present invention. FIG. 6 illustrates a controller according to an alternative exemplary embodiment of the present invention. FIG. 6 shows a continuous view of the expansion of the inflatable cushion without obstruction. The figure which shows the expansion | deployment in the state where the thing which obstruct | occludes the inflatable cushion and the tether exists is shown. The figure which shows the expansion | deployment in the state where the thing which obstruct | occludes the inflatable cushion and the tether exists is shown. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention. Fig. 4 illustrates an alternative exemplary embodiment of the present invention.

  Disclosed herein is a method for selectively controlling the deployment or inflation of an inflatable cushion of an airbag module through the use of a controller that operates to control the deployment characteristics of the inflatable cushion. And equipment. According to an exemplary embodiment, the controller constrains the deployment of the inflatable cushion in the first direction unless unhindered deployment in another or second direction is detected.

  According to an exemplary embodiment of the present invention, the control device is a releasable holding device, wherein the releasable holding device is fixed to the inflatable cushion when the inflatable cushion first. A releasable retainer configured to limit deployment in one direction and the releasable retainer when the inflatable cushion moves a predetermined distance in the second direction during inflation A sensing device for releasing the possible cushion.

  Next, referring to the drawings, FIG. 1 specifically shows a part of the inside of the vehicle 10. The interior of the vehicle 10 includes a seat structure 12 and an airbag module 14 disposed in a spatial relationship selected with respect to the seat structure 12. The airbag module 14 includes a housing 16, an inflator 18, and an inflatable airbag or cushion 20. The module 14 is disposed in the vehicle 10 such that the cushion 20 is deployed toward the seat structure 12.

  The sensor or sensing and diagnostic module 22 is adapted to detect an activation event, where a threshold event occurs and an activation signal 24 is generated and received by the inflator 18 to allow the inflator to expand. The cushion will be inflated. Detection of threshold events is established by one or more sensors installed around the vehicle by known techniques. Thus, the activation signal 24 controls the activation of the airbag module 14. The sensing and diagnostic module 22 of the exemplary embodiment can execute computer readable data or program commands for executing control algorithms that control the operation of a microprocessor, microcontroller, or airbag module. Other equivalent processing equipment is provided. In order to perform the specified function and desired processing and the calculation for it (for example, the execution of Fourier analysis algorithm and the control processing specified here), the controller is not limited to one. Or a plurality of processors, one or more computers, memory, storage devices, one or more registers, timing, one or more interrupts, a communication interface, and an input / output signal interface, and at least one of the above Or a combination thereof. For example, the controller may include input signal filtering to allow such signals to be accurately sampled, converted, or acquired from the communication interface. As described above, exemplary embodiments of the present invention can be implemented through computer-implemented processes and devices for performing these processes.

  The inflatable cushion is stored in the housing 16 in a folded or undeployed state. The cushion is arranged in fluid communication with an inflator 18 that generates inflation gas to inflate the cushion. When an activation event is detected by the sensing and diagnostic module 22, the inflator 18 is activated via a signal 24 to generate inflation gas. The inflation gas causes the cushion 20 to inflate and expand from the housing 16 to the interior of the vehicle. It should be understood that the module 14 is shown as being included in the vehicle dashboard by way of example only. Of course, the module 14 may be, for example, but not limited to, a steering wheel, seat, A-pillar, roof, and other locations, and other angular or positional relationships shown in FIG. It could be mounted for deployment in other areas of the vehicle. Furthermore, the specific configurations of the vehicle interior, the instrument panel, the airbag module, and the relationship with them are provided by way of example, and of course these configurations are different from the specific configuration shown in FIG. I hope you understand.

  In addition, the present disclosure further contemplates use with various types of inflatable cushions and inflators. For example, the cushions are constructed and / or folded in a particular manner to achieve different deployment configurations and different types of inflators (eg, two-stage inflators).

  Further in accordance with an alternative exemplary embodiment of the present invention, the sensing and diagnostic module may be capable of detecting one or more conditions of the seat structure. For example, the sensing and diagnostic module 22 may include the following loads or loads on the seat structure 12 (eg, occupant weight), the position of the seat structure, the angle of one part of the seat structure relative to another, the air of the seat structure Sensing one or more of the distance from the bag module 14 and other data related to the deployment of the airbag by receiving input from a plurality of sensors located around the vehicle Can be able to.

  For example, the sensing and diagnostic module may include, for example, but not limited to, a seat position sensor 26, an optical scanner 28, a load sensor 30, a seat reclining sensor 32, a seat belt usage detection sensor (not shown), and Input from one or more sensors, such as belt tension sensor 34, can be received. The sensor is installed to provide an input signal to the module 22 that indicates one or more seat conditions. One or more seat conditions combined with the occupant size (eg, weight determined by the sensor) are installed in the sensing and diagnostic module to determine the desired deployment scheme for the inflatable cushion Input to a control algorithm resident in the microprocessor. For example, when the data input is compared to a look-up table stored in a microprocessor or other readable format memory, the algorithm determines whether full or partial deployment of the airbag is desirable. Can do. (For example, customizing an airbag module by activating or not activating a system designed to change cushion deployment characteristics).

  Sequential sampling of various sensors can provide various inputs to the sensing and diagnostic module before an activation event (deployment) occurs. It should be noted that the airbag inflation system of the present disclosure is believed to be usable with any combination of the sensors described above and is intended to be limited by the specific types of sensors discussed above. No.

  According to certain exemplary embodiments of the present invention, the deployment of the inflatable cushion in the first direction is then followed by the deployment of the inflatable cushion of the airbag module, as shown in FIGS. In order to change the characteristic, it is controlled by the control device 50. In an exemplary embodiment, the control device is installed in an inflatable cushion of the airbag module. According to certain exemplary embodiments of the present invention, the control device is configured to restrict the inflatable cushion from deploying in a first direction schematically indicated by arrow 54. A releasable holding device 52 is provided.

  According to an exemplary embodiment of the present invention, the releasable retaining device is inflatable for deployment toward the vehicle occupant, away from the airbag module, by kinematics of the inflatable cushion. The first part of the inflatable cushion or leading edge that becomes the first part of the cushion is impeded or constrained. As a result, by preventing the progression of this part of the inflatable cushion, the other part or the second part of the cushion will be deployed quickly or more quickly in other directions far from the airbag module. . For example, at least in FIGS. 1-3, which shows an inflatable cushion for a passenger side air bag module, the lower edge deploys outward prior to the front edge, after which the lower edge is obstructed. If not, the leading edge can be fully deployed. Further, at least in FIGS. 9A to 11B showing the inflatable cushion of the driver side airbag module, the upper edge is impeded from progressing and the front edge is ahead of the upper edge. If deployed outward and then the leading edge is not obstructed, the upper edge can be fully deployed. In addition, even when the upper edge of the inflatable cushion on the driver's seat side is restrained, the lower edge is moved out first, so that the lower edge is the lower part of the occupant (for example, the upper leg part). The body part) and the steering wheel.

  That is, because of the kinematics of the cushion, the unconstrained inflatable cushion deploys away from the module and at least one or the first part is the other part or the second part of the inflatable cushion. Provide a leading edge that will contact the object or individual earlier. Therefore, the other part will be deployed outwardly and away from the airbag module after the first part corresponding to the leading edge is deployed farther from the module. Further, depending on the position of the occupant with respect to the inflatable cushion, the leading edge may contact a less desirable occupant area than the part where the “other part” of the inflatable cushion normally contacts.

  In contrast, according to certain exemplary embodiments of the present invention, the controller may first deploy the second or other portion by preventing the advancement of the first portion of the inflatable cushion. And the other part is used to determine whether the occupant is in close proximity to the inflatable cushion using the other part or the second part as a sensing device. . In addition, these other parts will unfold in a direction that will cause them to come into contact with the occupant area, which is more forgiving by contact with the inflatable cushion.

  In accordance with certain exemplary embodiments of the present invention, the releasable retention device has a first end 56 releasably secured to a first position 60 of the inner surface 58 of the inflatable cushion. This first position is the leading portion of the inflatable cushion, which is the first portion of the inflatable cushion that deploys away from the airbag module toward the vehicle occupant by the inflatable cushion kinematics. Corresponding to a first portion of the inflatable cushion providing an edge.

  According to certain exemplary embodiments of the present invention, the releasable retaining device comprises a tether or other material suitable to withstand the expansion force applied to the inflatable cushion. In certain exemplary embodiments, the releasable retaining device or tether corresponds to deployment of the first position 60 of the inflatable cushion in the first direction 54 or is first from the fixation point. And, in one exemplary embodiment, an airbag module housing, has a deployment effective length “x” or extension length “x” to another fixed point. That is, the effective length “x” corresponds to, for example, the deployment of the inflatable cushion in the first direction, and as shown in FIG. 2, a portion of the releasable retaining device 52 may include an instrument panel or air Bent around the part of the bag module housing.

  As shown in FIG. 3, the effective length x of the releasable retaining device is from a distance “xl”, which corresponds to the distance deployed in the first direction 54 when deployed without an obstruction by the inflatable cushion. It is getting shorter. Thus, according to an exemplary embodiment of the present invention, the releasable retaining device is provided when at least one other part of the inflatable cushion is not deployed in an unhindered manner. The inflatable cushion prevents full deployment in the first direction. Further, by constraining the first portion of the inflatable cushion in the first direction, the second portion or other portion is deployed first or first when the inflatable cushion is deployed, and then inflated. If the first parts of the possible cushion were not restrained, those parts are deployed. In addition, the other part deploying at an earlier stage can determine whether the occupant is in proximity to the inflatable cushion by using the other part or the second part as a sensing member. used. That is, the releasable holding device prevents the inflatable cushion from reaching the distance xl when the inflatable cushion is deployed and the releasable holding device is fixed in the first position.

  According to an exemplary embodiment, the control device further comprises a sensing device 62 for releasing the releasable holding device. The sensing device is configured to detect whether the second portion of the inflatable cushion is deployed in the second direction 68 without obstruction. This second direction releasably secures the sensing device to the releasable retaining device, so that in certain exemplary embodiments, the sensing device is proximate to the leading edge of the second portion 64. Corresponding to the deployment of the second portion 64 in the second direction 68, which may also be described as being directed to another point that is fixed to the second portion, which is the inner surface of the inflatable cushion. Yes.

  As described above, restraining the first portion by the releasable retaining device causes the second portion to deploy faster than an unconstrained inflatable cushion. The second part is then used to determine whether the inflatable cushion is obstructed.

  In an exemplary embodiment of the invention, the second portion of the inflatable cushion is the lower front edge 70 of the inflatable cushion, and the second direction is generally from the first direction. , Downward or forward and downward direction 72, corresponding to a more desirable contact location, according to an exemplary embodiment of the present invention.

  According to certain exemplary embodiments, the sensing device may further cause the inflatable cushion to move in the second direction when the second portion of the inflatable cushion deploys in the second direction without obstruction. A tether having an effective length shorter than the length “y1” corresponding to the distance to be expanded, or a length “y” at the time of extension is provided. As such, according to an embodiment of the present invention, the sensing device is taught when the second portion of the inflatable cushion is deployed in the second direction by a distance greater than at least “y”. Thus, the pin or other equivalent device that releasably secures the releasable retaining device in the first position is withdrawn, and the releasable retaining device is the first of the inflatable cushion. And from the end of the sensing device with a fixed pin, so that the inflatable cushion can be deployed a distance of “xl” in the first direction.

  According to an exemplary embodiment of the present invention, the releasable retaining device is such that the inflatable cushion is fully in the first direction when the second portion of the inflatable cushion is obstructed during deployment. In a non-limiting exemplary embodiment, where a rear-facing child seat 74 is positioned in front of the inflatable cushion being deployed (FIG. 2). As shown, the rear-facing child seat will impede the deployment of the inflatable cushion in the second direction, so that the releasable retaining device remains fixed to the inflatable cushion, Thus, the expansion of the inflatable cushion in the first direction is limited. That is, if the inflatable cushion is impeded from deployment in the second direction, the sensing device will not fully reach the deployment length, and thus the sensing device will secure the releasable retaining device to the cushion. Since the pin is not pulled out, the releasable holding device remains fixed to the inflatable cushion.

  As such, certain exemplary embodiments of the present invention are directed to a control device disposed within an inflatable cushion, the control device comprising at least a second of the inflatable cushion. A releasable retainer configured to limit directional deployment, wherein the releasable retainer is releasably secured to a first position on an inner surface of the inflatable cushion, and inflatable And a sensing device for releasing the releasable retaining device from the first position when the second position of the cushion is moved a predetermined distance during inflation. The sensing device is fixedly secured to a second position on the inner surface of the inflatable cushion, and further the sensing device has a releasable retaining device that is releasable when the second position is moved a predetermined distance. It is configured to release from the position.

  According to an exemplary embodiment, the sensing device is secured to the second position 76 of the inflatable cushion, the second position of the inflatable cushion being a predetermined distance in the second direction. A release member 78 is provided for releasing the releasable retaining device from the first position of the inflatable cushion when deployed.

  According to one non-limiting exemplary embodiment, as shown in FIGS. 4A to 6B, the release member may be configured to release the end 82 of the releasable holding device after the end 82 has passed the holding member 84. A pin or retaining device 80 secured to one end of the sensing device for releasably securing to itself, the retaining member being secured to the inner surface of the inflatable cushion, An opening 86 is provided through which the releasable retaining device can be secured to the inner surface of the inflatable cushion. Non-limiting examples of pins or retaining devices 80 include a cotter pin structure, in which a portion of the cotter pin is passed through the end 82 of the releasable retaining device, which is connected to the retaining member. After passing around, it is adapted to be secured to another part of the releasable holding device. According to an exemplary embodiment, the pin or retention device 80 is sufficiently plastic to withstand the tensile forces that are to be exposed and to provide a low or desirable coefficient of friction for the releasable retention device material. It is made of a material or a metal material (for example, steel).

  In one non-limiting exemplary embodiment, the retention member 84 distributes the restraining force of the releasable retaining device 52 around the surface area of the front portion or first portion or leading edge of the inflatable cushion. It is the pin or rod (FIG. 4C) by which the both ends were fixed to the fixing member 88 comprised so. In one non-limiting exemplary embodiment, the securing member is a piece of material with at least two ends secured to the inner surface of the inflatable cushion, and the retaining member is an inflatable cushion of the inflatable cushion. In order to disperse around the surface, it is fixed to the surface of the material between two fixed ends. Furthermore, the opening 86 will be located between the holding member and the surface of the material.

  Further, in accordance with certain exemplary embodiments of the present invention, the securing of the releasable retaining device to the first portion causes the sensing device to have a minimal amount of force to release the releasable retaining device. However, it is configured to require only. This is because, in at least one non-limiting embodiment, the releasable retaining device is looped around the retaining member 84 so that at least two portions of the releasable retaining device are the first of the inflatable cushion. It is easy to realize by receiving a tension that prevents or restrains the progress of the portion. As such, the amount of force required to remove the retaining device 80 from the releasable retaining device is between the two legs or portions of the releasable retaining device that is wound around the retaining member 84. Thus, the tension applied to the holding device 80 which fixes the two parts of the releasable holding device to the holding member is reduced.

  Further, by allowing the sensing device to require a minimal amount of force to release the releasable retaining device (e.g., pulling out the pin), the portion contacting the object or occupant or the second The portion further has a lower contact force compared to the constrained first portion or leading edge. Since the pin fixing the sensing device to the releasable holding device can be easily removed, smooth deployment of the inflatable cushion is facilitated. Again, this is the leading part of the cushion, which is the part of the cushion that the kinematics of the cushion are likely to deploy from the instrument panel outward with greater force than the rest of the cushion. This is facilitated by preventing or constraining the advance of the edge.

  As such, if the second portion of the inflatable cushion is not obstructed, the sensing device releases the releasable retaining device from the front portion of the cushion (eg, the end of the releasable retaining device). Pulling out the pin holding or securing it to the cushion), the leading edge of the cushion will either be completely out or fully unfolded. Otherwise, if the sensing device does not fully extend, the pin is not withdrawn and the releasable retaining device remains secured to the leading edge of the inflatable cushion.

  FIGS. 6A and 6B illustrate another alternative method for releasably securing a releasable retention device to an inflatable cushion. Here, the fixing part and the holding member are each replaced by a single piece of material 90 fixed to the inner surface of the inflatable cushion in two positions. As in the previous embodiment, the end of the releasable retaining device is secured around the material 90 and the release member 78 secured to the sensing member is connected to the releasable retaining device by the end 82. The part is fixed after passing through the opening defined by the material 90 and, as before, provides two parts of the releasable retaining device to withstand the inflating force of the inflatable cushion. ing.

  Referring now again to FIGS. 1-6B, the sensing device has one end secured to the release member 78 or pin 80 and the other end secured to the portion of the inner surface proximate the second portion 64 of the inflatable cushion. The tether 92 is provided. As such, when the second portion moves undisturbed by a distance greater than the length of the sensing device or tether 92, the tether is taught and the pin end 82 of the retainer capable of releasing the pin. Thus, the first portion of the inflatable cushion is expanded or separated in the direction of arrow 44 because the end 82 is swung or separated from the holding member 84 secured to the inflatable cushion. It will be possible to expand.

  Further, in one non-limiting exemplary embodiment, the fixed end of the releasable retaining device is inflated when the inflatable cushion is deployed and the releasable retaining device is not released from the inflatable cushion. To secure the structure to withstand force, a securing point 94 attaches the releasable retaining device stationary end 96 to the inflatable cushion and anchors 98 secured to the inflatable cushion outer surface 100. Providing in close proximity (e.g. sewing or other equivalent fastening means) is provided. According to certain exemplary embodiments, the anchor 98 is configured to be received in a complementary opening in either or both of the airbag module housing or the structural member of the instrument panel.

  In yet another alternative, as shown in FIGS. 5A to 5E, when the inflatable cushion is deployed and the releasable retaining device is not released from the inflatable cushion, the fixed end of the releasable retaining device Is secured by passing the end portion of the releasable retaining device through the opening of the inflatable cushion, wherein the end portion is An anchor 98 secured thereto, the anchor 98 being configured to be received in the complementary opening 102 in either or both of the air bag module housing or the structural member of the instrument panel. ing.

  In yet another alternative, the anchor 98 is disposed between a portion of the inflator and the bracket 104 holding the inflator in place (FIG. 5D). As shown in FIGS. 5A to 5E, the releasable retaining device passes its secured fixed end through the inflatable opening of the inflatable cushion, after which a portion of the releasable retaining device is inflated between the inflator and the air. Located between the bag module housings. Further, the anchor is configured such that it cannot pass between the inflator and the airbag module housing while the inflatable cushion is deployed. In addition, as shown in FIG. 5D, the inflator is held in place by a mounting plate 104 that also has the function of preventing the anchor from passing therethrough. FIG. 5E shows the releasable retaining device secured to the airbag module housing with the inflatable cushion removed for clarity.

  Of course, the above-described embodiment is an example of a method for securely securing a releasable retention device to an inflatable cushion, and the exemplary embodiment of the present invention is a specific example illustrated herein. It is not intended to be limited to configuration.

  Next, FIG. 7 shows a continuous view in which the inflatable cushion is deployed without obstructing objects, while FIG. It shows a continuous diagram unfolding in a certain state. As clearly shown in FIG. 8, the inflatable cushion is releasable because the second portion of the inflatable cushion is blocked or obstructed and the sensing device is not deployed to its maximum working length. It is restrained in the first direction by the holding device. Further, as shown in FIG. 8, the constrained inflatable cushion clearly has a width that is greater than the deployed width of the inflatable cushion shown in FIG.

  9-16 illustrate alternative exemplary embodiments of the present invention. Here, parts having similar or similar functions are numbered in the 100s. These drawings show an inflatable cushion 108 configured for use with a driver side airbag module. Similar to the previous embodiment, the cushion that is inflatable in the first direction is controlled by a control device 150 installed in the inflatable cushion.

  Here, the control device includes a releasable retaining device 152 configured to restrict the inflatable cushion from deploying in a first direction schematically indicated by arrow 154. . According to an exemplary embodiment, the releasable retaining device includes a first portion 155 having one end 157 secured proximate to an inflatable cushion inflation opening 159, and a first position. And a second portion 161 releasably secured to the inner surface of the inflatable cushion at 160. In one non-limiting exemplary embodiment, the second portion passes through a plurality of openings 163 defined by a plurality of members 165 that are secured in at least two portions to define the openings 163. Also provided with a loop of nylon woven material or other equivalent material. According to an exemplary embodiment, the second part passes through the respective opening 163 (see FIG. 13), where several parts 167 of the second part are second together. Has been pulled. As shown in FIG. 13, the end portion and the middle portion of the second portion 161 are assembled to provide a fixation point, and the member 165 is also assembled together. According to certain exemplary embodiments of the present invention, the member 165 is located at the peripheral edge of the inflatable cushion and corresponds to the area where the front cushion portion 173 is secured to the rear cushion portion 175. And defining a peripheral edge of the inflatable cushion, thus restricting or deploying the inflatable cushion in the first direction when the first portion is secured to the second portion. to bound. Of course, the member 165 may be located in other parts of the inflatable cushion.

  As shown in FIG. 14, the first portion passes through the opening defined by the member and then passes through the loop defined by the second portion. The end portion 182 of the first portion is then secured to the first portion after passing through the second portion loop.

  According to certain exemplary embodiments of the present invention, the first and second portions of the releasable retaining device are tethers or other suitable for withstanding the inflating force applied to the inflatable cushion. It is equipped with the material.

  Next, as shown in FIGS. 9-11B, according to an exemplary embodiment, the combined length of the first and second portions of the releasable retaining device or tether is the effective length “x Or an extended length “x” corresponding to the deployment of the first position 160 of the inflatable cushion in the first direction 154. That is, the effective length “x” corresponds to the deployment of the inflatable cushion in the first direction.

  As shown, the effective length x of the releasable holding device is shorter than the distance “x1”, which is the distance that the inflatable cushion is deployed in the first direction when deployed without obstruction. It corresponds to. As such, according to certain exemplary embodiments of the present invention, the releasable retaining device is deployed in a manner that does not obstruct at least one other portion of the inflatable cushion. If not, it prevents the inflatable cushion from fully deploying in the first direction. That is, the releasable retaining device prevents the inflatable cushion from reaching the distance xl when the inflatable cushion is deployed and the releasable retaining device is secured in the first position.

  According to an exemplary embodiment, the control device further comprises a sensing device 162 to release the releasable holding device. The sensing device is such that the second portion of the inflatable cushion 164 is releasably secured to deployment of the second portion 164 of the inflatable cushion in the second direction 168 or to a releasable retaining device. From a point, in one exemplary embodiment, the inner surface of the inflatable cushion proximate to the second portion 164, undisturbed deployment in a second direction corresponding to another fixation point. It is comprised so that it may detect whether it exists. According to an exemplary embodiment of the present invention, the second portion of the inflatable cushion is the front or middle surface portion 170 of the inflatable cushion, and the second direction is from the first direction. It is almost ahead.

  According to certain exemplary embodiments of the present invention, the sensing device is configured such that when the second portion of the inflatable cushion deploys unhindered in the second direction, the inflatable cushion is second. The effective length or the extended length “y” is shorter than the length “y1” corresponding to the distance developed in the direction. As such, in accordance with certain exemplary embodiments of the present invention, the sensing device when the second portion of the inflatable cushion is deployed at least a distance greater than “y” in the second direction. Releases the releasable retaining device from the first position of the inflatable cushion so that the inflatable cushion can be deployed in the first direction by a distance “x1”.

  This is also shown in FIG. 11A, but even when the inflatable cushion is not constrained in the first direction, the inflatable cushion is constrained in the second direction or the inflatable cushion is premature. When restrained in the second direction, the lower edge 187 expands in the direction of arrow 189 and a portion of the inflatable cushion is located between the occupant and the steering wheel. The same is true for the constrained deployment of the inflatable cushion of the passenger side airbag module. That is, when an inflatable cushion is constrained in one direction, the inflatable cushion will deploy in another direction that is not constrained by the inflatable cushion.

  According to an exemplary embodiment of the present invention, the releasable retaining device is configured such that when the second portion of the inflatable cushion is obstructed during deployment, the inflatable cushion is in the first direction. Prevent full deployment, in one non-limiting exemplary embodiment, where the occupant 185 is located at a predetermined distance in front of the deployable inflatable cushion (at least 9A and 10A). As shown, the occupant obstructs deployment of the inflatable cushion in the second direction, so that the releasable retaining device remains secured to the inflatable cushion and is therefore inflatable. The expansion of the cushion in the first direction is limited. That is, if the inflatable cushion is obstructed in the second direction, the sensing device will not fully reach the deployed length, and thus the releasable retention device remains fixed to the inflatable cushion. .

  According to an exemplary embodiment, the sensing device is secured to the second position 176 of the inflatable cushion and the second position of the inflatable cushion is deployed a predetermined distance in the second direction. A release member 178 for releasing the releasable retaining device from the first position of the inflatable cushion.

  According to one non-limiting exemplary embodiment, as shown in FIGS. 15 and 16, the release member may connect the end 182 of the first portion of the releasable retaining device to the releasable retaining device. The second portion includes a pin or retaining device 180 for securing after passing through a plurality of second portion loops whose ends are releasably secured to the inner surface of the inflatable cushion. . In one non-limiting exemplary embodiment, each securing member 165 is secured to the inner surface of the inflatable cushion in at least two portions to distribute the holding load around the desired portion of the inflatable cushion. Is a piece of material made.

  As such, if the second portion of the inflatable cushion is not obstructed, the sensing device releases the releasable retaining device from the front portion of the cushion (eg, the end of the releasable retaining device). Pull out the pin holding or securing it) so that the leading edge of the cushion can be fully extended or deployed. Otherwise, if the sensing device does not fully extend, the pin is not withdrawn and the releasable retaining device remains secured to the leading edge of the inflatable cushion.

  Of course, the embodiment described above is an example of a method for releasably securing a releasable retention device to an inflatable cushion, and the exemplary embodiment of the present invention is not limited to the particular embodiment illustrated herein. It is not intended to be limited to structure.

  In accordance with another alternative exemplary embodiment of the present invention, as shown in FIGS. 17-23, the inflation energy or gas placed in the cushion is applied to the inflatable cushion at one end and the airbag module at the other end. It is controlled by a tether 118 for evacuation fixed to a part of In this embodiment, the venting tether is used in combination with a releasable holding device and sensing device. The venting tether has a predetermined length and is folded together with the housing and the inflatable cushion, and the venting tether is arranged so as to align with the opening of the airbag module housing. Has been. In the initial stage of deployment, the vent opening of the housing is not covered or blocked by the vent string, and as the cushion moves toward full deployment in the first direction, the vent opening is opened. A portion of the tether that is configured to cover is in a position that covers the vent opening. The movement of the venting tether is indicated by an arrow 119 in the figure.

  Tie movement or unraveling is facilitated smoothly by the inflating cushion. Thus, if the expansion of the cushion in the first direction is not hindered, the output of the inflator can be vented from the vent opening of the housing. See FIGS. 8 and 8A and FIG. 19 for examples.

  Certain exemplary embodiments of the present invention provide for venting or direct venting of inflator gas by venting tethers that close some of the inflator openings or housing openings that are in direct alignment with the inflator. Is blocked, restricted, or prevented. Alternatively, the vent opening in the housing may be offset from the inflator opening in the inflator, and multiple openings are aligned with some of the diffuser vent holes in the housing and some are not. It may be arranged as follows.

  When deployment begins, the vent hole opens (or opens after only a slight movement of the cushion to assist in opening the deployment door (eg, provides a greater door opening force during the initial stamping phase of deployment). Therefore, the inflation gas from the inflator can pass out of the housing through the vent hole of the inflator adjacent to the opening of the housing. This occurs in a short period of time until the cushion expands inward into the vehicle, the tether is pulled forward, and finally the vent opening is closed.

  Non-limiting applications that require such a configuration include airbag door panels that require a large opening force, such as some invisible tear seam door panels (eg, for tears visible from the outside). There are no seams). These configurations sometimes require greater opening forces than visible seamed door panels. Another non-limiting example is that when the door panel swings or pivots open, it swings or pivots in a very low area where the occupant is unlikely to be near the deploying door, An airbag module installed in a vehicle. In contrast, doors that face the occupant and are spaced apart are placed so that the tether is first evacuated and the inflatable cushion is deployed toward the occupant to cover the vent hole. It is contemplated for use with exemplary embodiments.

  If the tether is not fully extended, the vent hole will remain open and most of the expansion energy will be vented from the back or side of the module located far from the deployed cushion ( (Indicated by arrow 120 in FIG. 17). At the same time, the releasable retention device will prevent or restrain the progression of another part of the inflatable cushion. On the other hand, if the tether can be fully extended, less gas is lost due to venting and is replenished by the second stage of the inflator. This occurs at the same time that the releasable retaining device is released from the inflatable cushion. FIG. 18 shows a state in which the tether is pulled to the fully extended length and the vent opening of the housing is closed.

  According to one exemplary embodiment, since the air bag module uses direct venting (eg, the inflator vent holes are aligned with the vent opening of the housing), the module There is no need to increase the pressure before starting the extraction. This helps to reduce the initial punching force seen when in direct contact with the deployment door. Furthermore, no electrical input or additional ignition loop or additional parts are required in at least some embodiments. Further, exemplary embodiments of the present invention do not add additional components that may rattle and / or add significant weight to the module.

  Referring now to the figures, in particular, FIGS. 17-19 illustrate one exemplary embodiment. Here, the airbag module includes an outer housing 16 for attaching to or in close proximity to an instrument panel or vehicle interior surface by suitable means such as fasteners. Of course, the module is also envisaged to be attached to other structures in the vehicle. The housing is made of a rigid material that can be easily molded or extruded, such as plastic, steel, aluminum, and the like.

  As will be described in detail below, the airbag module 14 includes means for customizing or customizing the inflation level and venting of the inflatable cushion 20. The inflation level corresponds to the deployment range of the inflatable cushion. More precisely, the insufflation or lack of inflation gas through the opening of the housing is determined by a fully inflated cushion 20 or a partially constrained cushion 20. The inflatable cushion is made of a fibrous material such as nylon or polyester, as is known in the art.

  FIG. 19 shows successive events of the inflatable cushion being deployed at the following time increments from the initial deployment: 10 ms, 30 ms, 50 ms, and 70 ms. Further, FIG. 19 shows a drawing of the vent opening of the housing of the airbag module. As shown, the inflatable cushion vent string initially shuts off the vent opening, but the vent vent opening for the period 27-56 from the next initial deployment. Aligns with the vent opening in the housing, thus allowing the inflation gas to escape, and then when the inflatable cushion is fully deployed (eg, unfolded and released without obstructions) Possible release of the holding device), the venting tether is pulled to the blocking position for the remainder of the expansion period.

  Referring now to FIGS. 20-24, the fixation and actuation of the bleed tether 118 to the airbag module is shown in accordance with an exemplary embodiment of the present invention. For clarity, the control device of the exemplary embodiment of the present invention is not shown. However, it should be understood that the exemplary embodiment of the present invention envisions the use of an evacuation tether in conjunction with the controller described in FIGS. Of course, it should be understood that the exemplary embodiments of the present invention are intended to include separate configurations of the controller and venting tether. In other words, the exemplary embodiment assumes a configuration in which a combination of a control device and a vent string, or a vent cord controller is used exclusively.

  As shown, in the exemplary embodiment, the inflatable cushion is attached to the housing by a retainer 138. The retainer 138 is configured to be installed within an inflatable opening of the inflatable cushion, and passes through the inflatable cushion opening and the inflatable cushion by passing through the housing opening. A plurality of studs or attachment means 140 are provided for attachment to the housing. As shown, a vent string 118 or deployable member is shown. According to certain exemplary embodiments, the tether 118 is made of the same material as the inflatable cushion, or some other material suitable for covering the deployment and vent openings. The tether 118 has one end fixed to the inner surface of the inflatable cushion and the other end fixed to another part of the airbag module. For example, the retainer 138 provides a means for securing the tether to the airbag module. In an exemplary embodiment, the tether 118 is secured to the inner surface of the front surface of the inflatable cushion. Alternatively, the tether is fixed to the inflatable cushion by a panel member 121 (shown by a dotted line in FIG. 26) disposed between the end of the tether and the inner surface of the inflatable cushion. Is secured to a portion of the panel member at some point not directly secured to the inflatable cushion, and the two opposite ends 323 of the panel member are secured to the inflatable cushion, It provides a large surface contact area related to the anchoring position of the tether to the inflatable cushion.

  Next, FIGS. 23A and 24 show rear views of the airbag module. As shown, the housing 16, according to an exemplary embodiment, has one or more bleed openings 142 arranged to align with the bleed openings 144 of the inflator 18. have. As shown, the vent openings 144 are positioned such that some are indirectly aligned with the openings 142 such that some are directly aligned with the openings 142. In contrast, several vent openings 144 are arranged to exhaust inflation gas into the opening of the inflatable cushion 20.

  To provide bleed through the two different levels of openings 142, the tether 118 may be in a first expanded state / outline 146 (FIG. 22 or FIG. 17) or a second expanded state / outline (see FIG. 12 or FIG. 18) adjust the bleed through the back side of the airbag module housing. For example, when the inflatable cushion is initially deployed and not fully inflated, the tether 118 is secured to the module so that one or more openings 142 are blocked by the tether. Thus, the inflation gas is discharged directly from the airbag module (eg, FIGS. 17, 22 and 22A). This is facilitated by one or more openings 141 in the tether that is aligned with the opening 144 of the inflator and directly aligned with the opening 142 of the housing, as described above.

Further, if the tether is not fully extended, the opening 142 allows the inflation gas to be expelled from the housing as opposed to being expelled into the inflatable cushion.
Alternatively, as shown in FIGS. 18, 21, and 23A, when the inflatable cushion reaches a fully extended state, the tether 118 is pulled to cover the opening 142 and more inflated gas. Will be guided into the cushion. This is because when the tether 118 is fully extended, the tether opening 141 is no longer aligned with the opening 142 and the tether 118 is inflated from the inflator opening that is aligned with the housing opening. It is facilitated smoothly by being made of a material having the property of blocking the above. In order to prevent the opening 142 from being blocked before the tether 140 is fully extended, a portion of the tether 140 is tightly bound with a releasable thread 143 (eg, a thread that breaks when the tether 118 is pulled). Are sewn together. Alternatively, the tether is folded so that the portion of the tether proximate to the point secured to the housing is not unwound or unfolded until the cushion is fully unfolded (e.g., There is no seam that can be released).

  Another embodiment of the invention uses a tether comprising a double stage inflator having a first stage and a second stage, wherein the first stage is through a plurality of openings in the inflator housing. Providing a greater inflation output, the second stage is adapted to provide a smaller inflation output through the second plurality of openings in the inflator housing. In yet another embodiment, the first stage and the second stage provide equal expansion output.

  The possibility of igniting the first or second stage first is also due to the severity of the start-up event and the sensing and diagnostic module (SDM) based on the multiple inputs of multiple sensors as described above. Can be determined.

  According to another alternative embodiment, the tether is first arranged in a non-bleed configuration, then in a vent configuration, and then has a non-bleed configuration when the tether is fully deployed. Yes. That is, the tether opening is moved to provide this mechanism. This is because the tether is not aligned with the opening of the inflator and the housing opening at the beginning of the tether, and the tether is pulled when the cushion starts to expand, and the configuration shown in FIG. Then, when the cushion is fully expanded, the tether is moved and finally promoted smoothly by being folded and mounted so as to have the configuration of FIG. This allows excess inflation gas or pressure to rise into the housing during the initial breakthrough phase of deployment (eg, tearing the instrument panel door opening). Further, in one possible embodiment, the tether is prevented from reaching the configuration of FIG. 22 until a portion of the cushion passes through the opening in the instrument panel, which is It is facilitated smoothly by manipulating the length and folding.

  As such, in any of the above-described embodiments, the tether 118 represents the progress of the inflatable cushion into the vehicle and the tether is vented through the rear housing. Means are provided to facilitate this.

  Thus, the tether is configured to adjust the evacuation based on the backward stroke of the cushion (for example, movement toward the seat structure). As an alternative embodiment, the tether comprises a semi-permeable material that acts like a filter for filtering inflator combustion byproducts that are exhausted from the vent opening during deployment of the inflatable cushion. It may be. In this embodiment, the semi-permeable material is placed over the vent opening.

  FIGS. 25 and 26 illustrate a non-limiting structure of an evacuation tether used in an exemplary embodiment of the present invention. As shown, the vent tie opening 141 can be of various sizes and dimensions to extend the duration of the vent when the inflatable cushion is deployed in an unhindered manner. It can be configured to have.

  As such, the releasable retaining device can be evacuated through the at least one vent opening when the inflatable cushion and the releasable retaining device are secured to the inner surface of the inflatable cushion. Combining a sensing device for release from an evacuation tether configured in such a manner and a releasable device allows the inflatable cushion to provide a number of deployment style options. In certain exemplary embodiments, the releasable retention device constrains or slows the progression of the portion of the inflatable cushion when other portions of the inflatable cushion are obstructed during deployment. In addition, if a portion or other portion of the cushion is obstructed, the portion of the inflatable cushion is constrained by the restraining device, and the venting tether can evacuate a portion of the inflation gas from the inflatable cushion. In this way, the internal pressure of the inflatable cushion is reduced or maintained.

  Alternatively, when the cushion is deployed in an unhindered manner, the releasable retention device deploys the cushion and the venting tether is adjusted or pulled to cover the vent opening of the housing.

DESCRIPTION OF SYMBOLS 10 Vehicle 12 Seat structure 14 Airbag module 16 Housing 18 Inflator 20 Cushion 22 Sensing and diagnostic module 24 Activation signal 26 Seat position sensor 28 Optical scanner 30 Load sensor 32 Seat reclining sensor 34 Belt tension sensor 50 Control device 52 Holding device 54 Arrow , First direction 56 first end 58 inner surface 60 first position 62 sensing device 64 second portion 68 second direction 70 lower front edge 72 downward direction 74 child seat 76 second position 78 release member 80 Retaining device 82 Retaining device end 84 Retaining member 86 Opening 88 Fixed member 90 Material 92 Tie 94 Fixed point 96 Fixed end 98 Anchor 100 Outer surface 102 Complementary opening 104 Bracket 108 Cushion 118 Extraction Connecting string 119 Arrow 120 Arrow 138 Retainer 140 Attaching means, connecting string 141, 142 Opening portion 143 Sewing thread 144 Exhaust opening portion 146 External shape 150 Control device 152 Holding device 154 Arrow 155 First portion 157 End portion 159 Expansion opening portion 160 First position 161 Second part 163 Opening 165 Member 167 Part 169 Fixing point 173 Front cushion part 175 Rear cushion part 176 Second position 178 Release member 182 First part end part 187 Lower edge part 189 Arrow

Claims (16)

In a control device for correcting the deployment characteristics of an inflatable cushion of an airbag module,
A releasable retaining device, wherein a first end of the releasable retaining device is releasably secured to a first position on an inner surface of the inflatable cushion, the releasable retaining device However, when secured to the first position of the inflatable cushion, the releasable retaining device is configured to limit deployment of the inflatable cushion in a first direction; A releasable holding device;
A sensing device for releasing the releasable retaining device from the first position, wherein the sensing device is a second position away from the first position of the inner surface of the inflatable cushion. The releasable retaining device is releasably secured to the sensing device when the second position of the inflatable cushion moves a predetermined distance during inflation; A sensing device configured to release the releasable retaining device from the first position;
One end of the tying cord is fixed to the inner surface of the inflatable cushion, and the tying cord for evacuation has the releasable holding device fixed to the inner surface of the inflatable cushion. The at least one vent opening can be evacuated through the at least one vent opening and the releasable retaining device is released from the inner surface of the inflatable cushion. A control device comprising: an air tie string configured to be covered by the air tie string. The predetermined distance corresponds to deployment of the lower edge of the inflatable cushion in an unobstructed manner in the second direction, and the venting tether is the at least one vent The control device of claim 1, comprising an elongated opening for alignment with the opening. The first end of the releasable holding device is wound around a fixing mechanism fixed to the first position on the inner surface, and the first end is fixed to the sensing device. The engaging member is fixed to the releasable holding device, and the force for removing the engaging member from the releasable holding device is such that the releasable holding device is The control device according to claim 1, wherein when the first position is constrained, the control device has a smaller force applied to the releasable holding device. The control device according to claim 1, wherein the releasable holding device is a tether, and the sensing device is a tether. The fixing mechanism includes a member fixed at the first position on the inner surface, and a hole through which the first end of the releasable holding device passes, with one end fixed to the member. The control device according to claim 3, comprising a defining pin. The member distributes the restraining force provided at the first position by the releasable retaining device when the inflatable cushion is deployed and the releasable retaining device is secured to the securing mechanism. The control device according to claim 5, wherein the control device is a planar member fixed to the first position of the inner surface by at least two edges. The engaging member passes the portion of the releasable holding device and the first end of the releasable holding device to release the first end of the releasable holding device. A pin that is secured to a retainer, wherein the pin is releasably retained when the second position of the inflatable cushion moves the predetermined distance during inflation of the inflatable cushion. The control device according to claim 6, wherein the control device is removable from the device. The pin is plastic and the inflatable cushion further comprises a fixing mechanism installed on an outer surface of the inflatable cushion, the fixing mechanism holding the releasable holding of the inflatable cushion A second end of the device is secured in a position proximate to a point for securing the inflatable cushion, and the securing mechanism is configured to secure the inflatable cushion to the airbag module housing. The control device according to claim 7. In the airbag module,
A housing having at least one vent opening;
An inflatable cushion configured to deploy from the housing;
An inflator for inflating the inflatable cushion, wherein the inflator is in fluid communication with the inflatable cushion;
A releasable retaining device, wherein a first end of the releasable retaining device is releasably secured to a first position on an inner surface of the inflatable cushion, the releasable retaining device Is configured to limit deployment of the inflatable cushion in a first direction when the releasable retaining device is secured to the first position of the inflatable cushion; A releasable holding device;
A sensing device for releasing the releasable retaining device from the first position, the sensing device being a second of the inner surface of the inflatable cushion that is remote from the first position. Fixedly in position and releasably secured to the releasable retaining device, the sensing device is configured to move the second position of the inflatable cushion a predetermined distance during inflation. A sensing device configured to release the releasable holding device from the first position;
One end of the inflatable cushion is connected to the inner surface of the inflatable cushion, and the other end is fixed to the housing. The connecting string has the releasable holding device connected to the inflatable cushion. When secured to the inner surface, the at least one vent opening can be evacuated and when the releasable retaining device is released from the inner surface of the inflatable cushion, the at least An air bag module comprising: a vent string, wherein one vent opening is configured to be covered by the vent string. The predetermined distance corresponds to deployment of the lower edge of the inflatable cushion in an unhindered manner in a second direction, and the venting tether is the releasable retaining device The airbag module of claim 9, further comprising an opening configured to align with the at least one vent opening when the is secured to the inner surface of the inflatable cushion. . The first end of the releasable holding device is wound around a fixing mechanism fixed to the first position on the inner surface, and the first end is fixed to the sensing device. The airbag module according to claim 9, wherein the airbag module is fixed to the releasable holding device by an engaged member. The releasable holding device is a tether, the sensing device is a tether, the fixing mechanism is a member fixed at the first position on the inner surface, and any one end is attached to the member. A pin that is fixed and defines a hole through which the first end of the releasable retainer passes, wherein the engagement member is part of the releasable retainer and the releasable A plastic pin that secures the first end of the releasable retaining device to the releasable retaining device by passing the first end of the retentive retaining device; The airbag module of claim 11, wherein the airbag module can be removed from the releasable retaining device when the second position of the inflatable cushion moves the predetermined distance during inflation of the inflatable cushion. Lumpur. The venting tether shuts off the at least one vent opening during an initial phase of deployment of the inflatable cushion, after which the releasable retaining device is attached to the inflatable cushion. The control device according to claim 9, wherein the at least one vent opening is not blocked by the tether until released from the inner surface. The vent string includes an elongated opening for alignment with the at least one vent opening and at least one expansion opening of the inflator, and the length of the vent string is 14. The airbag module of claim 13, wherein the inflatable cushion corresponds to a predetermined distance that inflates away from the housing in the first direction. The inflator has a cylindrical shape, the inflator is provided with a plurality of expansion openings arranged at the periphery of the inflator, and the venting tether is connected to the periphery of the inflator. The airbag module of claim 9, wherein the airbag module is configured to have a portion that deploys around the portion. In a method for limiting deployment of an inflatable cushion in a first direction,
Securing a releasable retaining device to a first position on an inner surface of the inflatable cushion, wherein the releasable retaining device is configured such that the releasable retaining device is the first of the inflatable cushion; And is configured to limit deployment of the inflatable cushion in a first direction when secured to the position of 1, wherein the releasable retaining device is configured by the engagement member of the sensing device. Fixing a releasable holding device fixed in position 1;
A portion of the sensing device fixedly secured to a second position of the inner surface of the inflatable cushion that is remote from the first position moves a predetermined distance during inflation, and Releasing the releasable retaining device from the first position when the mating member is removed from the releasable retaining device;
Venting inflation gas from the inflatable cushion until the releasable retaining device is released from the first position.

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