Energy absorption for rotating seat

Abstract

System (100; 200), comprising: a vehicle seat which is rotatable about an axis perpendicular to a vehicle floor from a forward-facing position to a rearward-facing position, wherein the seat has a seat surface (120; 220) and a seat backrest (115; 215); a seat belt assembly (125; 225) extending at least partially from the seat back (115; 215); and at least one airbag (160a, 160b; 260a, 260b) integrated into the seat belt assembly (125; 225) and is deployable when the vehicle seat is rotated to at least one of the rearward-facing position and a position intermediate the forward-facing position and the rearward-facing position; and a processor programmed to determine a vehicle seat position and a vehicle impact and output a control signal to an inflator (190; 290) to deploy the at least one airbag (160a, 160b; 260a, 260b) based on the vehicle seat position relative to the axis.

Description

PRIOR ARTEnergy absorbing devices such as airbags may absorb energy during a vehicle impact. Airbags are located throughout the passenger compartment of the vehicle and are deployed in response to detecting the impact. For example, airbags are located in the steering wheel, instrument cluster, etc. Conventional airbag positions assume a non-changing seating arrangement.DE 199 35 737 A1 discloses a restraint system with at least one belt tensioning device. DE 10 2008 045 292 A1 discloses an inflatable seat belt for a motor vehicle. DE 10 2013 007 711 A1 relates to a method for controlling a gas generator.BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1 is an example diagram of a vehicle having a system for deploying airbags integrated into rotatable seats. FIG. 2 is a top view of the passenger compartment of the vehicle of FIG. 1 having rotatable seats. FIG. 3 is a top view of an example rotatable seat that may be incorporated into the passenger compartment of the vehicle illustrated in FIG. 2. FIG. 4 is a side view of the example rotatable seat of FIG. 3. FIG. 5 is a top view of a passenger compartment of another example vehicle having rotatable seats. FIG. 6 is a top view of an example rotatable seat that may be incorporated into the passenger compartment of the vehicle illustrated in FIG. 5.DETAILED DESCRIPTIONA vehicle with a conventional seat assembly has seats all facing in the same direction. However, autonomous vehicles do not enable conventional seating arrangements. In an autonomous vehicle, some seats, such as the front seats, may be rotated to one side, e.g., the rear, of the vehicle. However, rotating the seats may move the occupant on the seat away from one or more airbags.Rather than incorporating additional airbags into the passenger compartment to accommodate any possible seat configuration, one solution is to incorporate one or more passive restraint devices such as airbags, bolsters, seatbelts, etc., into the seat itself. In this way, the passive restraint remains fixed with respect to the orientation of the seat, which provides impact absorption regardless of the seat configuration. One solution may therefore include integrating a seat belt assembly into a seat back of a rotatable seat and integrating an airbag into the seat belt assembly. The airbag may be deployable when the seat is in a rearward-facing position.FIG. 1 illustrates an example vehicle 101. The vehicle 101 includes a computing device 105 and a seat 110. The computing device 105 includes a processor and a memory. The computing device 105 may be programmed to output a control signal to deploy a passive restraint, e.g., an airbag, cushion, etc. The computing device 105 is generally programmed to communicate via a controller area network (CAN) bus or the like. Via the CAN bus, OBD-II, and / or other wired or wireless mechanisms, e.g., WiFi, Bluetooth, or the like, the computing device 105 may transmit messages to various devices in a vehicle 101, e.g., airbags 150, 160 discussed below, and / or receive messages from the various devices, e.g., controllers, actuators, sensors, etc., including data collectors. In cases where the computing device 105 actually comprises multiple devices, the CAN bus or the like may alternatively or additionally be used for communications between devices represented as the computing device 105 in this disclosure.FIG. 2 illustrates a passenger compartment of the vehicle 101 including the system 100. The vehicle 101 includes a plurality of seats 110. Each seat 110 supports a vehicle occupant during operation of the vehicle 101. For an autonomous vehicle, each seat 110 may be located anywhere in the vehicle 101, e.g., an operator side, an occupant side, etc.At least one of the seats 110 is rotatable about an axis perpendicular to a vehicle floor at an angle θ. As shown in FIG. 2, the seat 110 may begin in a forward facing position, i.e., facing in the direction of vehicle forward movement. The seat 110 may then be rotated at an angle θ with respect to the forward facing position. When the angle θ=180°, i.e., the seat 110 has rotated by half a revolution, the seat 110 faces the rear of the vehicle 101 and is located at the rearward facing position. The seat 110 may be secured at any angle θ to a position between the forward-facing position and the rearward-facing position. The seat 110 rotates on a rotating mechanism, e.g., a gear assembly, configured to rotate the seat 110 at the angle θ.FIG. 3 illustrates an example rotatable seat 110. The seat includes a seat back 115. The seat back 115 provides support for the vehicle occupant and may house at least a portion of a seat belt assembly 125. The seat back 115 includes a support structure 170 and a cushion 175. The seat back 115 can rotate with the seat bottom 120 about the axis at the angle θ.The seat 110 further includes the seat surface 120. The seat bottom 120 is secured to the seat back 115 and provides support for the vehicle occupant. The seat bottom 120 may house at least a portion of the seat belt assembly 125. The seat surface 120 includes a support structure 180 and a cushion 185. The seat surface 120 may rotate about the axis at the angle θ.The seat 110 includes the seat belt assembly 125. The seat belt assembly 125 absorbs impact energy from the vehicle occupant and secures the occupant to the seat back 115 and the seat bottom 120. The seat belt assembly 125 includes a retractor 130, a first anchor point 135, and a second anchor point 140. The seat belt assembly 125 may be at least partially installed in the seat back 115 and / or the seat bottom 120. The seat belt assembly 125 may extend at least partially from the seat back 115. The seat belt assembly 125 may be a 3-point seat belt system, where the 3 points are the retractors 130, the first anchor point 135, and the second anchor point 140.The seat belt assembly 125 includes the retractor 130. The retractor 130 receives a webbing 145 and pulls the webbing 145 against the occupant, i.e., controls the extension of the webbing 145. The retractor 130 may be installed in and / or integrated with the seat back 115. The retractor 130 may extend from the seat back 115, e.g., may be attached to the seat back support structure 170. The retractor 130 may be of a known type, e.g., a biasing device.The seat belt assembly 125 includes the first anchor point 135. The first anchor point 135 secures the webbing 145 to the seat 110 while allowing the webbing to move toward and away from the retractor 130. The first anchor point 135 provides the second point of the 3-point harness system. The first anchor point 135 may be installed and / or integrated with at least one of the seat back 115 and / or the seat bottom 120. That is, the first anchor point 135 may be attached to one of the support structures 112, 116 (not shown) of the seat back 115 and the seat bottom 120, respectively. The first anchor point 135 may extend from one of the seat back 115 or the seat bottom 120. As is known, the first anchor point 135 may include a buckle to enable a latch plate connected to the webbing 145 to be engaged with the first anchor point 135.The seat belt assembly 125 includes the second anchor point 140. The second anchor point 140 secures the webbing 145 to the seat 110 opposite the first anchor point 135 such that the third point of the 3-point webbing system is provided. The second anchor point 140 may be installed and / or integrated into at least one of the seat back 115 and / or the seat bottom 120. That is, the second anchor point 140 may be attached to one of the support structures 170, 180 of the seat back 115 and the seat bottom 120, respectively. The second anchor point 140 may extend from one of the seat back 115 or the seat bottom 120.The seat belt assembly 125 includes the webbing 145. The webbing 145 secures the occupant to the seat back 115 and the seat bottom 120 and, when secured by the retractor 130, the first anchor point 135 and the second anchor point 140 absorb energy from the movement of the occupant during an impact. The webbing 145 may be constructed from, for example, a fabric, a polymer, a composite, etc. The webbing 145 may be of one-piece construction or may include a plurality of parts, e.g., a pair of straps, each connected to the first anchor point 135.The webbing 145 may include a shoulder strap 150 and a belt strap 155. When the seat belt assembly 125 is closed, i.e., the webbing 145 is secured to the first anchor point 135, the shoulder strap 150 extends from the retractor 130 to the first anchor point 135 such that the shoulder strap 150 is disposed over an upper body of a vehicle occupant. The strap 155 may extend over the lower torso of the occupant from the first anchor point 135 to the second anchor point 140. The shoulder strap 150 and the belt strap 155 may be two separate portions of the webbing 145, or may be a one-piece portion of the webbing 145.The seat belt assembly 125 includes at least one airbag 160. The airbag 160 deploys during an impact to absorb impact energy that is otherwise applied to the occupant. The airbag 160 may be constructed of, for example, a fabric, a polymer, a composite, etc. The airbag 160 may be installed and / or integrated into the webbing assembly 125. More specifically, the airbag 160 may be sewn or otherwise secured to the webbing 145. The airbag 160 may be disposed between the first anchor point 135 to the retractor 130 or the second anchor point 140. The example of FIG. 3 shows two airbags 160: a first airbag 160 aand a second airbag 160 b. The first airbag 160 aextends from the first anchor point 135 to the retractor 130 and is integral with or otherwise attached to the shoulder strap 150. The second airbag 160 aextends from the first anchor point 135 to the second anchor point 140 and is integral with or otherwise attached to the strap 155. The seat belt assembly 125 may include any number of additional airbags 160.The seat 110 may include at least one side airbag 165. The side airbag 165 is configured to deploy during an impact to reduce the amount of energy applied to an occupant moving laterally with respect to the seat 110 during the impact. The side airbag 165 may be installed in the seat back 115. For example, the side airbag 165 may be secured to the support structure 170 and deploy through the cushion 175. The seat 110 may include a plurality of side airbags 165 to absorb energy from movements of the occupant in a plurality of directions, e.g., the seat 110 may include a pair of side airbags 165 installed to the left and right sides of the occupant to absorb energy as the occupant moves leftward or rightward during an impact.The airbags 160, 165 may each be in fluid communication with an inflator 190. The inflator 190 may be, for example, a cold gas inflator. The inflator 190 may receive a control signal output from the computing device 105 to deploy the airbags 160, 165 upon detecting an impact. The seat 110 may include a plurality of inflator 190. The inflator 190 may be disposed in at least one of the seat back 115 and / or the seat bottom 120.Because the seat belt assembly 125 is secured to the seat 110, the retractor 130 and the airbags 160, 165 may be actuated when the seat 110 is rotated at any angle θ, including the rearward facing position, in which the occupant may not have the benefit of other airbags integrated into the passenger compartment, such as an airbag integrated into a steering wheel. Thus, even when the seat 110 is in the rearward facing position, when the computing device 105 detects an impact, the computing device 105 can send a signal to the retractor 130 to stop the extension of the webbing 145, so that the occupant is locked. The computing device 105 may also send a signal to the inflator 190 to deploy at least one of the first and second airbags 160 and / or the side airbag 165 depending on where the impact has occurred with respect to the vehicle 101 and depending on the angle θ of rotation of the seat 110. By consulting, e.g., a look-up table, the computing device 105 can select one or more airbags 160, 165 to deploy them based on the angle θ and the direction of the impact and output a control signal to one or more of the inflator 190 to deploy the selected airbags 160, 165.FIG. 4 shows a side view of the seat 110. As described above, the seat back 115 includes the seat back structure 170 and the seat back pad 175. The structure 170 extends along the length of the seat back 115 and is covered by the seat back cushion 175. The structure 170 may be constructed from, for example, a metal, a polymer, a composite, etc. The retractor 130 may be attached to the structure 170 and extend out of the cushion 175. The side airbag 165 may also be attached to the structure 170 and may deploy from the cushion 175.The seat 110 further includes the seat surface 120. As described above, the seat surface includes the seat surface structure 180 and the seat surface pad 185. The structure 180 extends along the length of the seat bottom 120 and is covered by the seat bottom pad 185. The first and second anchor points 130, 135 may be attached to the structure 180 and extend out of the cushion 185. Although not shown in FIG. 4, the side airbag 165 may be attached to the structure 180 and extend out of the cushion 185 after deployment.FIG. 5 illustrates another example system 200 in a passenger compartment of a vehicle 101. The vehicle 101 includes a plurality of rotatable seats 210. The seats 210 may each be rotated at an angle θ about an axis with respect to the vehicle floor. Each seat 210 may be rotated at a different angle θ, which are illustrated herein as example angles θ, θ',θ'',θ'''. In the example of FIG. 5, the seats 210 each include a seatbelt assembly 225, which is a 4-point seatbelt with integral airbags. In an autonomous vehicle 101, the seats 210 may rotate from a forward-facing position to a rearward-facing position.FIG. 6 illustrates an example rotatable seat 210 as shown in the vehicle 101 of FIG. 5. The seat 210 includes a seat back 215 and a seat bottom 220. The seat back 215 provides support for the vehicle occupant and may house at least a portion of a seat belt assembly 225. The seat back 215 includes a support structure 270 and a cushion 275 similar to the support structure 170 and cushion 175 described above for the seat 110. The seat back 215 may rotate with the seat bottom 220 about the axis at the angle θ.The seat 210 further includes the seat surface 220. The seat bottom 220 is secured to the seat back 215 and provides support for the vehicle occupant. The seat surface 220 may house at least a portion of the webbing assembly 225. The seat bottom 220 includes a support structure 280 and a cushion 285 similar to the seat bottom support structure 180 and the seat bottom cushion 185 for the seat 110 illustrated in FIG. 4. The seat surface 220 may rotate about the axis at the angle θ.The seat belt assembly 225 absorbs impact energy from the vehicle occupant and secures the occupant to the seat back 215 and the seat bottom 220. The seat belt assembly 225 is a 4-point seat belt assembly and includes a first retractor 230 a, a second retractor 230 b, a first anchor point 235, a second anchor point 240, a webbing 245, and a buckle 295. The seat belt assembly 225 may be at least partially installed in the seat back 215 and / or the seat bottom 220, e.g., connected to the support structure 270. The seat belt assembly 225 may extend at least partially from the seat back 215, e.g., through the cushion 275.The seat belt assembly 225 includes the pair of retractors 230 a, 230 b(collectively referred to as retractor 230) that represents two of the four points in the 4-point belt system. The retractors 230 each take in the webbing 245 and tighten the webbing 245 against the occupant, i.e., control the extension of the webbing 245. For example, a first retractor 230 amay control a pull-out of a first shoulder belt 250 aand a first belt belt 255 aand a second retractor 230 bmay control a pull-out of a second shoulder belt 250 band a second belt 255 b. The retractors 230 may be installed in and / or integrated with the seat back 215. The retractors 230 may extend from the seat back 215, e.g., may be attached to the seat back support structure 270. The retractors 230 may be of a known type, e.g., a biasing device.The seat belt assembly 225 includes the first anchor point 235. The first anchor point 235 secures the webbing 245 to the seat 210 while the webbing 245 may move toward and away from the retractor 230 a. The first anchor point 235 provides the third point of the 4-point harness system. That is, the first anchor point 235 may secure the first strap 255 ato the seat back 215 or the seat bottom 220. The first anchor point 235 may be installed and / or integrated into at least one of the seat back 215 and / or the seat bottom 220. That is, the first anchor point 235 may be attached to one of the support structures 270, 280 of the seat back 215 and the seat bottom 220, respectively. The first anchor point 235 may extend from one of the seat back 215 or the seat bottom 220 out of the respective pads 275, 285.The seat belt assembly 225 includes the second anchor point 240. The second anchor point 240 secures the webbing 245 to the seat 210 while the webbing 245 may move toward and away from the retractor 230 b. The second anchor point 240 provides the fourth point of the 4-point harness system. That is, the second anchor point 240 may secure the second strap 255 bto the seat back 215 or the seat bottom 220. The second anchor point 240 may be installed and / or integrated into at least one of the seat back 215 and / or the seat bottom 220. That is, the second anchor point 240 may be attached to one of the support structures 270, 280 of the seat back 215 and the seat bottom 220, respectively. The second anchor point 240 may extend from one of the seat back 215 or the seat bottom 220 out of the respective pads 275, 285.The seat belt assembly 225 includes the webbing 245. The webbing 245 secures the occupant to the seat back 215 and the seat bottom 220 and, when secured by the retractors 230, the first anchor point 235, the second anchor point 240, and the buckle 295 absorb energy from the occupant's movement during an impact. The webbing 245 may be constructed from, for example, a fabric, a polymer, a composite, etc. The webbing 245 may be of one-piece construction or may include a plurality of parts, e.g., a pair of straps, each connected to the buckle 295.The webbing 245 may include a first shoulder strap 250 a, a second shoulder strap 250 b(collectively referred to as strap 250), a first strap 255 a, and a second strap 255 b(collectively referred to as strap 255). When the seat belt assembly 225 is closed, i.e., the webbing 245 is secured to the buckle 295, the shoulder straps 250 extend from the respective retractors 230 to the respective first and second anchor points 230, 235 such that the shoulder straps 250 are disposed over an upper torso of a vehicle occupant. The straps 255 may extend over the lower torso of the occupant from the respective first and second anchor points 230, 235 to the buckle 295. The shoulder straps 250 and the belt straps 255 may each be individual portions of the webbing 245 or the first shoulder strap 250 aand the first belt strap 255 amay be a first unitary piece of the webbing 245 (i.e., a first webbing 245) and the second shoulder strap 250 band the second belt strap 255 bmay also be a second unitary piece of the webbing 245 (i.e., a second webbing 245).The seat belt assembly 225 includes the buckle 295. The buckle 295 secures the shoulder straps 250 and the belt straps 255 over the body of the vehicle occupant. The buckle 295 may include multiple slots to receive latch plates from the straps 250, 255. The buckle 295 may be permanently attached to the webbing 245, e.g., one of the straps 250, 255. The seatbelt buckle 295 may connect the retractors 230 to the webbing 245 with the anchor points 235, 240. As shown in FIG. 6, the first shoulder strap 250 aextends from the first retractor 230 aand is fastened to the buckle 295 by, for example, a lock plate. The first strap 255a extends from the first anchor point 235 and is attached to the buckle 295.The second belt 250 bextends from the second retractor 230 band is attached to the buckle 295, and the second belt 255 bextends from the second anchor point 240 to the buckle 295.The seat belt assembly 225 includes at least one airbag 260. The airbag 260 deploys during an impact to absorb impact energy that is otherwise applied to the occupant. The airbag 260 may be constructed from, for example, a fabric, a polymer, a composite, etc. The airbag 260 may be installed and / or integrated within the seatbelt assembly 225. More specifically, the airbag 260 may be sewn or otherwise secured to the webbing 245. For example, the airbag 260 may be disposed between the first retractor 230 and the buckle 295. The example of FIG. 6 shows two airbags 260: a first airbag 260 aand a second airbag 260 b(collectively, airbags 260). The first airbag 260 aextends from the first retractor 230 ato the buckle 295 and is integral with or otherwise attached to the first shoulder strap 250 a. The second airbag 260 bextends from the second retractor 230 bto the buckle 295 and is integrated with or otherwise attached to the second shoulder strap 250 b. The seat belt assembly 225 may include any number of additional airbags 250.The seat 210 may include at least one side airbag 265. The side airbag 265 is configured to deploy during an impact to reduce the amount of energy applied to an occupant moving laterally with respect to the seat 210 during the impact. The side airbag 265 may be installed in the seat back 215. For example, the side airbag 265 may be secured to the support structure 270 and deploy through the cushion 275. The seat 210 may include a plurality of side airbags 265 to absorb energy from movements of the occupant in a plurality of directions, e.g., the seat 210 may include a pair of side airbags 265 a, 265 b(collectively referred to as side airbags 265) installed to the left and right sides of the occupant, respectively, to absorb energy as the occupant moves leftward or rightward during an impact.The airbags 260, 265 may each be in fluid communication with an inflator 290. The inflator 290 may be, for example, a cold gas inflator. The inflator 290 may receive a control signal output from the computing device 105 to deploy the airbags 260, 265 upon detecting an impact. The seat 210 may include a plurality of inflator 290. The inflator 290 may be disposed in at least one of the seat back 215 and / or the seat bottom 220, e.g., secured to one of the support structures 270, 280.Because the seat belt assembly 225 is secured to the seat 210, the retractors 230 and the airbags 260, 265 may be actuated when the seat 210 is rotated at any angle θ, including to the rearward facing position, in which the occupant may not have the benefit of other airbags integrated into the passenger compartment, such as an airbag integrated into a steering wheel. Thus, even if the seat 210 is in the rearward facing position when the computing device 105 detects an impact, the computing device 105 can send a signal to the retractor 230 to stop extension of the webbing 245, locking the occupant. The computing device 105 may also send a signal to the inflator 290 to deploy at least one of the first and second airbags 260 and / or the side airbags 265 depending on where the impact has occurred with respect to the vehicle 101 and depending on the angle θ of rotation of the seat 210. By consulting, e.g., a look-up table, the computing device 105 may select one or more airbags 260, 265 to deploy them based on the angle θ and the direction of the impact and output a control signal to one or more of the inflator 290 to deploy the selected airbags 260, 265.

Claims

A system (100; 200) comprising: a vehicle seat rotatable about an axis perpendicular to a vehicle floor from a forward-facing position to a rearward-facing position, the seat having a seat bottom (120; 220) and a seat back (115; 215); a seat belt assembly (125; 225) extending at least partially from the seat back (115; 215); and at least one airbag (160a, 160b; 260a, 260b) integrated with the seat belt assembly (125; 225) and deployable when the vehicle seat is rotated to at least one of the rearward-facing position and a position between the forward-facing position and the rearward-facing position; and a processor configured to determine a vehicle seat position and a vehicle impact and output a control signal to an inflator (190; 290) to deploy the at least one airbag (160a, 160b; 260a, 260b) based on the vehicle seat position to the axle.The system (100; 200) of claim 1, wherein the seat belt assembly (125; 225) includes a first anchor point (135; 235), a second anchor point (140; 240), and a retractor (130, 130a; 230, 230a), wherein the first and second anchor points (135, 140; 235, 240) extend from the seat bottom (120; 220), and the retractor (130, 130a; 230, 230a) extends from the seat back (115; 215).The system (100) of claim 2, wherein the seat belt assembly (125) comprises a shoulder strap (150) and a belt strap (155), and wherein the at least one airbag (160a, 160b) comprises a first airbag (160a) and a second airbag (160b), wherein the first airbag (160a) is integrated with the shoulder strap (150) and the second airbag (160b) is integrated with the belt strap (155).The system (100) of claim 3, wherein the shoulder strap (150) extends from the retractor (130) to the first anchor point (135) and the belt strap (155) extends from the first anchor point (135) to the second anchor point (140).The system (100) of claim 4, wherein the shoulder strap (150) and the strap strap (155) are formed from a one-piece strap (145), and the first and second air bags (160a, 160b) are integrated into the strap (145).The system (100) of claim 4, further comprising a third airbag, wherein the third airbag is a side airbag (165) supported by the seat.The system (100; 200) of claim 1, further comprising an inflator (190; 290) disposed in at least one of the seat back (115; 215) and the seat bottom (120; 220), wherein the inflator (190; 290) is in fluid communication with the at least one airbag (160a, 160b; 260a, 260b).The system (100; 200) of claim 1, wherein the processor is further programmed to output the control signal to the inflator (190; 290) in response to detection of the vehicle seat (110; 220) in at least one of the rearward facing position and the position between the forward facing position and the rearward facing position and the vehicle impact.The system (100; 200) of claim 8, wherein the inflator (190; 290) is configured to deploy the at least one airbag (160a, 160b; 260a, 260b) in response to receiving the control signal output by the processor.The system (200) of claim 2, further comprising a second retractor (230b) and a buckle (295), wherein the webbing (245) includes a first webbing (245) and a second webbing (245), wherein the buckle (295) connects the first webbing (245), the first retractor (230a), and the first anchor point (235), and connects the second webbing (245), the second retractor (230b), and the second anchor point (240).A seat belt assembly (125; 215) comprising: a webbing (145; 245) forming a shoulder belt (150; 250) and a belt belt (155; 255); at least one airbag (160a, 160b; 260a, 260b) integrated with at least one of the shoulder belt (150; 250) and the belt belt (155; 255); and a processor programmed to determine a vehicle seat position including a forward-facing position and a rearward-facing position, the processor programmed to output a control signal responsive to the vehicle seat being in at least one of the rearward-facing position and a position between the forward-facing position and the rearward-facing position, and responsive to detecting a vehicle impact, the control signal causing the at least one airbag (160a, 160b; 260a, 260b) to deploy.The seat belt assembly (125; 215) of claim 11, wherein the seat belt assembly (125; 225) includes a first anchor point (135; 235), a second anchor point (140; 240), and a retractor (130, 130a; 230, 230a), wherein the shoulder strap (150; 250) extends from the retractor (130, 130a; 230, 230a) to the first anchor point (135; 235), and wherein the belt strap (155; 255) extends from the first anchor point (135; 235) to the second anchor point (140; 240).The seat belt assembly (225) of claim 12, further comprising a second retractor (230b) and a buckle (295), wherein the webbing (245) includes a first webbing (245) and a second webbing (245), wherein the buckle (295) connects the first webbing (245), the first retractor (230a), and the first anchor point (235), and connects the second webbing (245), the second retractor (230b), and the second anchor point (240).The seat belt assembly (125) of claim 11, wherein the at least one airbag (160a, 160b) comprises a first airbag (160a) and a second airbag (160b), and the first airbag (160a) is integrated with the shoulder strap (150) and the second airbag (160b) is integrated with the belt strap (155).The seat belt assembly (125; 225) of claim 11, wherein the processor is programmed to output the control signal to an inflator (190; 290) in fluid communication with the at least one airbag (160a, 160b; 260a, 260b).A system (100) comprising: a vehicle seat rotatable about an axis perpendicular to a vehicle floor from a forward-facing position to a rearward-facing position, the seat having a seat bottom (120) and a seat back (115); a seat belt assembly (125) extending at least partially from the seat back (115) having a first anchor point (135), a second anchor point (140), and a retractor (130); a first airbag (160a) and a second airbag (160b) integrated with the seat belt assembly (125) and deployable when the vehicle seat is rotated to at least one of the rearward-facing position and a position between the forward-facing position and the rearward-facing position; an inflator (190) disposed in at least one of the seat back (115) and the seat bottom (120); and a processor programmed to determine a vehicle seat position and a vehicle impact and output a control signal to the inflator (190) in response to the detection of the vehicle seat (110) in at least one of the rearward facing position and the position between the forward facing position and the rearward facing position and the vehicle impact; wherein the first and second anchor points (140) extend from the seat bottom (120) and the retractor (130) extends from the seat back (115); wherein the seat belt assembly (125) includes a shoulder belt (150) and a belt belt (155), and wherein the first airbag (160a) is integrated with the shoulder belt (150) and the second airbag (160b) is integrated with the belt belt (155); wherein the inflator (190) is in fluid communication with at least one of the first and second airbags (160a, 160b) and is configured to deploy at least one of the first and second airbags (160a, 160b) in response to receiving the control signal output from the processor.The system (100) of claim 16, wherein the shoulder strap (150) extends from the retractor (130) to the first anchor point (135) and the belt strap (155) extends from the first anchor point (135) to the second anchor point (140).The system (100) of claim 17, wherein the shoulder strap (150) and the strap strap (155) are formed from a one-piece strap (145), and the first and second air bags (160a, 160b) are integrated into the strap (145).The system (100) of claim 17, further comprising a third airbag, wherein the third airbag is a side airbag (165) supported by the seat (110).

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