Vehicle seat assembly

Abstract

A vehicle seat assembly 100 comprises a seat (110,fig.1), and a track assembly comprising a pair of stationary tracks 130 fixed to the vehicle floor and a pair of movable tracks 140 fixed to the seat

Description

TECHNICAL FIELD The present disclosure relates to a vehicle seat assembly. Aspects of the invention relate to a vehicle seat assembly, and to a vehicle including such a vehicle seat assembly. BACKGROUND It is known to provide a vehicle seat assembly which is mounted on a track assembly to permit adjustment of the seat in a longitudinal direction between a rear position and a forward position. It is also known to provide such seat assemblies with a seat position sensor to detect the position of the seat along the track assembly. This can be useful to determine the position of the seat in relation to a selected vehicle component, such as a deployable occupant restraint system located forward of the seat during use. The seat position sensor can enable an occupant restraint system controller to determine when the seat is in the forward position. Example seat assemblies include the seat position sensor as fixed to a moveable part of the track to sense the presence of a fixed part of the track. It is an aim of the present invention to address one or more of the disadvantages associated with the prior art. SUMMARY OF THE INVENTION Aspects and embodiments of the invention provide a vehicle seat assembly, and a vehicle as claimed in the appended claims According to an aspect of the present invention there is provided a vehicle seat assembly comprising: a seat; a track assembly for adjustably mounting the seat to a floor of the vehicle, the track assembly comprising at least one stationary track for fixed connection to the floor of the vehicle and at least one moveable track fixed to the seat and slidably engaged with the at least one stationary track to permit adjustment of the seat in a longitudinal direction between a rear position and a forward position; a seat position sensor for detecting when the seat is in the forward position; and a sensor mounting bracket by which the seat position sensor is supported, the sensor mounting bracket being fixed to the seat and extending laterally therefrom. The at least one stationary track comprises at least one side wall, wherein the at least one side wall comprises a target side wall comprising a surface feature towards its front end. The target side wall defines a sensor target region extending along its outer surface in the longitudinal direction at a height position above the surface feature. The seat position sensor comprises a sensor body configured to detect the sensor target region, and the seat position sensor extends downwards from the sensor mounting bracket such that the sensor body is vertically aligned with the sensor target region at a position above the surface feature. The surface feature may be any feature on the target side wall which could be detected by the sensor. For example, the surface feature may be a cavity, a recess, an aperture, a protrusion, or a fixing or fastener. The sensor target region may flat or may comprise longitudinally extending surface features. According to an aspect of the present invention there is provided a vehicle seat assembly comprising: a seat; a track assembly for adjustably mounting the seat to a floor of the vehicle, the track assembly comprising a pair of stationary tracks for fixed connection to the floor of the vehicle and a pair of moveable tracks fixed to the seat and slidably engaged with the pair of stationary tracks to permit adjustment of the seat in a longitudinal direction between a rear position and a forward position; a seat position sensor for detecting when the seat is in the forward position; and a sensor mounting bracket by which the seat position sensor is supported, the sensor mounting bracket being fixed to the seat and extending laterally therefrom. The pair of stationary tracks each comprise a pair of opposed side walls, wherein one of the side walls is a target side wall comprising an aperture towards its front end, the target side wall defining a substantially flat sensor target region extending along its outer surface in the longitudinal direction at a height position above the aperture. The seat position sensor comprises a sensor body configured to detect the sensor target region, and the seat position sensor extends downwards from the sensor mounting bracket such that the sensor body is vertically aligned with the sensor target region at a position above the aperture. With this arrangement, the height position of the sensor can be modified independently of the geometry of the moveable track such that it faces a target region of the stationary track which continues fully to the front edge of the stationary track without interruption by the aperture and without any need to redesign the moveable track or the bracket. This can facilitate improved sensing of the seat position by reducing the influence of the aperture, or of any other surface feature which might otherwise form an interruption to the target region along the side wall. For example, in some existing arrangements, the sensor is mounted to the moveable track at a similar height position to the apertures. Such apertures may be provided for ease of manufacture and / or for the fixation of additional components. For example to enable the clipping or fastening of end covers over the front ends of the stational tracks. As used herein, the term “fixed to” means “fixed in relation to” such that the two components move together. This can include direct fixation, or indirect fixation via one or more intermediate components. Optionally, the seat position sensor comprises a sensor housing within which the sensor body is provided. The sensor housing may be mounted to the sensor mounting bracket by a mounting arrangement comprising at least one locator configured to locate the seat position sensor relative to the sensor mounting bracket. In this manner, the sensor housing can act to protect the sensor body during installation and facilitate mounting of the sensor in the correct position relative to the track assembly. Optionally, the at least one locator comprises at least one locator lug defined by the sensor housing and at least one locator aperture defined by the sensor mounting bracket. The at least one locator lug may extend upwards from the sensor housing to be received in the at least one locator aperture. In this manner, the locator lug and aperture arrangement can facilitate mounting of the sensor in the correct position relative to the track assembly using features of the sensor housing and the mounting bracket. Optionally, the at least one locator lug comprises a plurality of locator lugs each comprising a stem portion extending in a vertical direction and a head portion which abuts against an upper surface of the sensor mounting bracket to suspend the sensor housing from the sensor mounting bracket. With this arrangement, the sensor can be suspended from the bracket by the locators prior to fastening of the sensor to the bracket using a threaded bolt. This can enable hands-free installation of the sensor, thereby facilitating assembly. Optionally, the plurality of locator lugs comprises a pair of L-shaped locator lugs and the at least one locator aperture comprises a pair of locator apertures. The stem portion of at least one of the locator lugs may have a lateral width which corresponds to the lateral width of its respective locator aperture to locate the seat position sensor in the lateral direction. This arrangement can provide improved ease of assembly by enabling hands-free installation of the sensor simply by inserting the lugs into the apertures and moving the sensor housing longitudinally. Optionally, the stem portion comprises one or more crush ribs extending from its outer surface in the lateral direction and configured to deform against the locator aperture. In this manner, the crush ribs can facilitate correct lateral positioning of the sensor relative to the track assembly even with variations in lug with due to manufacturing tolerances. Optionally, the mounting arrangement comprises a housing bolthole defined by the sensor housing and a bracket bolthole defined by the sensor mounting bracket. The housing bolthole and the bracket bolthole may be aligned when the seat position sensor is mounted to the sensor mounting bracket. Optionally, the housing bolthole and the bracket bolthole are both offset in the lateral direction away from the target side wall relative to the at least one locator aperture. With this arrangement, variations in sensor readings due to a metallic fastener can be reduced or avoided. Optionally, the sensor housing comprises a substantially flat contact surface which abuts against the underside of the sensor mounting bracket. The sensor housing may comprise a plurality of spacer ribs extending between the sensor body and the contact surface to define the height of the sensor body relative to the sensor mounting bracket. In this manner, the spacer ribs can facilitate fine-tuning of the height of the sensor body during the design of the sensor, without the need for further changes to the structure of the sensor housing. Optionally, the contact surface is defined by a plurality of contact ribs which protrude upwardly from a top wall of the sensor housing. In this manner, the contact ribs can facilitate installation of the sensor by reducing the contact area between the sensor and the mounting bracket, thereby reducing friction when the sensor is moved against the bracket during installation. Optionally, the sensor mounting bracket comprises a sensor mounting plate to which the seat position sensor is mounted, and which extends along a substantially horizontal plane. The term “substantially horizontal plane” refers to a plane which is substantially horizontal in relation to the vehicle in which the seat assembly is mounted, that is, the plane extends along the longitudinal and lateral axes of the vehicle. By mounting the sensor to a horizontal plate, the vertical height of the sensor body can be less susceptible to variations in the bend angle of the bracket than might otherwise be the case if the bracket were to extend at an angle to the horizontal plane. This can help to improve the accuracy of the sensor readings. According to another aspect of the invention, there is provided a vehicle comprising the vehicle seat assembly of any of the above aspects or embodiments. The vehicle may further comprise a deployable occupant restraint system located forward of the vehicle seat assembly, and a restraint system control module operatively connected to the seat position sensor and configured to control the deployable occupant restraint system in dependence on a position signal from the seat position sensor. Within the scope of this application it is expressly intended that the various aspects, embodiments, examples and alternatives set out in the preceding paragraphs, in the claims and / or in the following description and drawings, and in particular the individual features thereof, may be taken independently or in any combination. That is, all embodiments and / or features of any embodiment can be combined in any way and / or combination, unless such features are incompatible. The applicant reserves the right to change any originally filed claim or file any new claim accordingly, including the right to amend any originally filed claim to depend from and / or incorporate any feature of any other claim although not originally claimed in that manner. BRIEF DESCRIPTION OF THE DRAWINGS One or more embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 shows a perspective view of a seat assembly in accordance with an embodiment of the invention; Figure 2 shows an enlarged perspective view of part of the seat assembly of Figure 1; Figure 3 shows a cross-sectional view of part the seat assembly of Figure 1 showing the sensor; Figure 4 shows an enlarged perspective view of the seat assembly of Figure 1 showing the sensor; Figure 5 shows an enlarged perspective view of the seat position sensor shown in Figures 2 to 4; Figure 6 shows an enlarged perspective plan view of the seat assembly of Figure 1; and Figure 7 is a schematic representation of a vehicle in accordance with an embodiment of the invention. DETAILED DESCRIPTION Figure 1 illustrates a vehicle seat assembly 100 according to an embodiment of the present invention. The seat assembly 100 includes a seat 110 and a track assembly 120 for adjustably mounting the seat to a floor of the vehicle. The track assembly includes a pair of stationary tracks 130 for fixed connection to the floor of the vehicle and a pair of moveable tracks 140 fixed to the seat 110 and slidably engaged with the pair of stationary tracks 130 to permit adjustment of the seat in a longitudinal direction X between a rear position and a forward position. The stationary tracks 130 are substantially parallel to each other. The seat assembly 100 also includes a seat position sensor 150 for detecting when the seat is in the forward position, and a sensor mounting bracket 160 by which the seat position sensor is supported. The sensor mounting bracket 160 is fixed in relation to the seat 110 and extends laterally therefrom. That is, the sensor mounting bracket 160 extends in a lateral direction Y, which is transverse to both the longitudinal direction X and the vertical direction Z. The sensor mounting bracket 160 may be fixed to any suitable component of the seat 110. For example, the sensor mounting bracket 160 may be fixed, e.g. by welding, to a frame member 112 of the seat 110 and / or to one of the moveable tracks 140. For clarity, the terms “longitudinal”, “lateral” and “vertical” are used in a manner consistent with the co-ordinate system of the vehicle with which the seat assembly 100 is intended for use. Thus, the longitudinal direction X of the seat assembly 100 corresponds to the longitudinal direction, i.e. length direction, of the vehicle, while the lateral direction Y refers to the width or lateral direction, of the vehicle. Figures 2 to 6 illustrate the track assembly and sensor arrangement in more detail. As best seen in Figure 2, each stationary track 130 comprises a pair of opposed side walls 131, 132. One of the side walls is a target side wall 132 comprising an aperture 133 towards its front end 134. Such apertures may be provided for ease of manufacture of the track assembly and / or for the fixation of additional components. For example the aperture 133 may be provided to enable the clipping or fastening of an end cover (not shown) over the front end 134 of the stational track 130. The aperture 133 may be provided on just one of the side walls. In the illustrated embodiment, the aperture 133 is provided towards the front end of both side walls. The target side wall 132 also defines a substantially flat sensor target region 135 on its outer surface. The sensor target region 135 extends along the outer surface of the target side wall 132 in the longitudinal direction X at a height position above the aperture 133. The seat position sensor 150 comprises a sensor body 151 configured to detect the side wall 132. The seat position sensor 150 extends downwards from the sensor mounting bracket 160 such that the sensor body 151 is vertically aligned with the sensor target region 135 and above the aperture 133. With the illustrated arrangement, the height position of the sensor body 151 can be modified independently of the geometry of the moveable track 140 such that it faces a target region on the stationary track 130 which continues fully to the front edge of the stationary track 130 without interruption by the aperture 133 and without any need to redesign the moveable track 140 or the bracket 160. This can facilitate improved sensing of the seat position by reducing interference of the sensor readings by the aperture, or of any other surface feature which might otherwise form an interruption to the target region along the side wall. For example, in some existing arrangements, the sensor is mounted to the moveable track at a similar height position to the apertures. In such arrangements, the sensor might give an inaccurate indication of the seat position. The seat position sensor 150 also comprises a sensor housing 152 within which the sensor body 151 is housed. The sensor housing 152 is mounted to the sensor mounting bracket 160 by a mounting arrangement 170 comprising at least one locator 171-174 configured to locate the seat position sensor 150 relative to the sensor mounting bracket 160. The at least one locator may be discrete from the sensor housing 152 and / or the sensor mounting bracket 160. In the illustrated embodiment, the at least one locator comprises at least one locator hook or lug 171, 172 defined by the sensor housing 152 and at least one locator aperture 173, 174 defined by the sensor mounting bracket 160, wherein the at least one locator lug 171, 172 extends upwards from the sensor housing 152 to be received in the at least one locator aperture 173, 174. In the illustrated embodiment, the at least one locator is provided in the form of a plurality of locator lugs 171, 172 each comprising a stem portion 175 extending in a vertical direction and a head portion 176 which abuts against an upper surface of the sensor mounting bracket 160 to suspend the sensor housing from the sensor mounting bracket. Specifically, the plurality of locator lugs 171, 172 is shown as a pair of L-shaped locator lugs 171, 172 and the at least one locator aperture 173, 174 is shown as a pair of rectangular locator apertures 173, 174 in the bracket 160. The L-shaped locator lugs each comprise a head portion 176 extending longitudinally at the upper end of the stem portion 175 to form a hook shape. To install the sensor, the head portions 176 are inserted through the locator apertures 173, 174 and the sensor 150 is moved in the longitudinal direction so that the head portions 176 extend beyond the ends of the locator apertures and are retained against the upper surface of the bracket 160. This enables the sensor 150 to be suspended from the bracket 160 by the locators prior to fastening of the sensor to the bracket using a threaded bolt. This can enable hands-free installation of the sensor to facilitate assembly. The stem 175 of at least one of the locator lugs 171 has a lateral width W which corresponds to the lateral width W of its respective locator aperture 173 to locate the seat position sensor in the lateral direction Y at the correct distance from the sensor target region 135. In the illustrated embodiment, the stem 175 of lug 171 comprises one or more crush ribs 177 (as best seen in Figure 4) extending from its outer surface in the lateral direction to define the lateral width W of the stem 175. The crush ribs 177 are deformed during insertion of the locator lug 171 into the locator aperture 173 to ensure a tight fit between the lug 171 and aperture 173 at least in the lateral direction Y. The mounting arrangement 170 also includes a housing bolthole 178 defined by the sensor housing 152 and a bracket bolthole 179 defined by the sensor mounting bracket 160. The boltholes 178, 179 are aligned when the sensor housing 152 is correctly located with respect to the mounting bracket 160, as best seen in Figure 6, to enable fixation of the sensor 150 to the sensor mounting bracket 160 using a fastener (not shown). The housing bolthole 178 and the bracket bolthole 179 are offset in the lateral direction Y away from the target side wall 132 relative to the at least locator 171-174. In this manner, the influence of the fastener on the sensor readings can be reduced or avoided. Any suitable fastener may be used as part of the mounting arrangement 170. For example, the mounting arrangement may comprise a rivnut or weld nut (not shown) fixed over the bracket bolthole 179, and a threaded screw or bolt extending through the boltholes 178, 179 and screwed into the nut. With reference to Figures 4 and 5, the sensor housing 152 comprises a substantially flat contact surface 155 which abuts against the underside 162 of the sensor mounting bracket 160. The substantially flat contact surface 155 may be a continuous contact surface, for example defined by a flat top wall 153 of the sensor housing 152. In the illustrated embodiment, the contact surface 155 is defined by a plurality of contact ribs 154 which protrude upwardly from the top wall 153 of the sensor housing 152. The contact ribs 154 may be provided in any suitable arrangement. In the illustrated embodiment, the contact ribs 154 extends across the width of the top wall 153 and are spaced in the longitudinal direction. The contact ribs 154 can facilitate installation of the sensor by reducing the contact area between the sensor and the mounting bracket 160, thereby reducing friction when the sensor is slid in the longitudinal direction to locate the feet 176 of the locator lugs 171, 172 against the upper surface of the bracket 160. The sensor housing 152 also comprises a plurality of spacer ribs 156 extending between the sensor body 151 and the contact surface 155 space the sensor body 151 from the sensor mounting bracket 160 and thereby define the height Hs of the sensor body 151. The spacer ribs 156 may be generally vertical (as shown) or extend at an angle to the vertical. The provision of such ribs can facilitate fine-tuning of the height of the sensor body 151 during the design of the sensor, without the need for further changes to the structure of the sensor housing 152. The sensor housing may also comprise a connector portion 158 by which a sensor lead (not shown) can be retained to connect the sensor 150 to a control module. The sensor mounting bracket may have any suitable configuration. In the illustrated embodiment, the sensor mounting bracket 160 comprises a sensor mounting plate 162 to which the seat position sensor 150 is mounted and which extends along a substantially horizontal plane. By mounting the sensor 150 to a horizontal plate, the vertical height of the sensor body 151 is less susceptible to variations in the bend angle of the bracket than might otherwise be the case if the bracket were to extend at an angle to the horizontal plane. This can help to improve the accuracy of the sensor readings. Figure 7 illustrates a vehicle 200 according to an embodiment of the present invention. The vehicle 200 comprises the vehicle seat assembly 100 as illustrated in Figures 1 to 6. The vehicle 200 also includes a vehicle body 210, an occupant compartment or cabin 212 having a floor 214, an instrument panel 216, and a steering wheel 218. The vehicle seat assembly 100 is adjustably mounted to the floor 214 by the track assembly 120. Specifically, the pair of stationary tracks of the track assembly 120 are fixed to the floor 214 such that the position of the seat in a longitudinal direction can be adjusted between a rear position and a forward position by sliding the moveable tracks relative to the stationary tracks. The vehicle 200 also comprises a deployable occupant restraint system 220 located forward of the vehicle seat assembly 100, and a restraint system control module 230. The vehicle seat assembly may be a front seat or a rear seat. In the illustrated embodiment, the vehicle seat assembly 100 is the driver’s seat and the deployable occupant restraint system 220 is provided in the form of a driver airbag mounted in the centre of the steering wheel 218. Alternatively, or in addition, the deployable occupant restraint system 220 may comprise a passenger airbag (not shown) for example located behind a facia of the instrument panel 216. Other types of deployable occupant restraint system may be provided. The restraint system control module 230 is operatively connected to the seat position sensor 150 and is configured to control the deployable occupant restraint system 220 in dependence on a position signal from the seat position sensor. The restraint system control module 230 may be or form part of the vehicle ECU. The restraint system control module 230 may provide the sensor 150 with power. The restraint system control module 230 may receive data signals from other safety input devices (not shown), such as crash sensors, occupant sensors, and / or seat belt sensors. The restraint system control module 230 may be in any suitable position within the vehicle. For example, the restraint system control module 230 may be mounted under the centre console between the front seats. During operation, the seat position may be adjusted by sliding the moveable tracks along the stationary tracks. As the movable track slides along the stationary track to move the seat, the sensor detects the absence or presence of the sensor target and generates a signal representing the position of the seat. When the seat is moved to a forward position in which the sensor body reaches the front end of the target side wall, the sensor body detects the absence of the sensor target and outputs a position signal indicating that the seat is in the forward position. Based on the position signal, the restraint system control module 230 detects the indication that the seat is in the forward position and can modify the operation of the deployable occupant restraint system 220 accordingly, for example by preventing the deployment of the airbag or other deployable occupant restraint system. For the avoidance of doubt, the term “forward position” can refer to the forwardmost position of the seat or to an advanced position close to the forwardmost position but in which further forward movement of the seat along the track assembly is still possible. The sensor may comprise any suitable sensor type. The sensor is preferably a non-contact sensor. For example, the sensor may be magnetostrictive position sensor or any suitable position sensor. It will be appreciated that various changes and modifications can be made to the present invention without departing from the scope of the present application. Reference    Description 100 Vehicle seat assembly 110 Seat 112 Seat frame member 120 Track assembly 130 Stationary tracks 131 Side wall of stationary track 132 Target side wall of stationary track 133 Aperture in target side wall 134 Front end of stationary track 135 Sensor target region on target side wall 140 Moveable tracks 150 Seat position sensor 151 Sensor body 152 Sensor housing 153 Flat top wall of sensor housing 154 Contact ribs on sensor housing 155 Contact surface of sensor housing 156 Spacer ribs on sensor housing 158 Connector portion of sensor housing 160 Sensor mounting bracket 162 Underside of sensor mounting bracket 170 Mounting arrangement for sensor housing 171 Locator lug on sensor housing 172 Locator lug on sensor housing 173 Locator aperture in sensor mounting bracket 174 Locator aperture in sensor mounting bracket 175 Stem portion of locator lug 176 Head portion of locator lug 177 Crush ribs on locator lug 178 Housing bolthole 179 Bracket bolthole 200 Vehicle 210 Vehicle body 212 Occupant compartment or cabin 214 Floor of vehicle 216 Instrument panel 218 Steering wheel 220 Deployable occupant restraint system 230 Restraint system control module

Claims

1. A vehicle seat assembly comprising:a seat;a track assembly for adjustably mounting the seat to a floor of the vehicle, the track assembly comprising a pair of stationary tracks for fixed connection to the floor of the vehicle and a pair of moveable tracks fixed to the seat and slidably engaged with the pair of stationary tracks to permit adjustment of the seat in a longitudinal direction between a rear position and a forward position;a seat position sensor for detecting when the seat is in the forward position; anda sensor mounting bracket by which the seat position sensor is supported, the sensor mounting bracket being fixed to the seat and extending laterally therefrom,wherein the pair of stationary tracks each comprise a pair of opposed side walls,wherein one of the side walls is a target side wall comprising an aperture towards its front end, the target side wall defining a substantially flat sensor target region extending along its outer surface in the longitudinal direction at a height position above the aperture,wherein the seat position sensor comprises a sensor body configured to detect the sensor target region of the target side wall, andwherein the seat position sensor extends downwards from the sensor mounting bracket such that the sensor body is vertically aligned with the sensor target region at a position above the aperture.

2. The vehicle seat assembly of claim 1, wherein the seat position sensor comprises a sensor housing within which the sensor body is provided, the sensor housing being mounted to the sensor mounting bracket by a mounting arrangement comprising at least one locator configured to locate the seat position sensor relative to the sensor mounting bracket.

3. The vehicle seat assembly of claim 2, wherein the at least one locator comprises at least one locator lug defined by the sensor housing and at least one locator aperture defined by the sensor mounting bracket, wherein the at least one locator lug extends upwards from the sensor housing to be received in the at least one locator aperture.

4. The vehicle seat assembly of claim 3, wherein the at least one locator lug comprises a plurality of locator lugs each comprising a stem portion extending in a vertical direction and a head portion which abuts against an upper surface of the sensor mounting bracket to suspend the sensor housing from the sensor mounting bracket.

5. The vehicle seat assembly of claim 4, wherein the plurality of locator lugs comprises a pair of L-shaped locator lugs and the at least one locator aperture comprises a pair of locator apertures, wherein the stem portion of at least one of the locator lugs has a lateral width which corresponds to the lateral width of its respective locator aperture to locate the seat position sensor in the lateral direction.

6. The vehicle seat assembly of claim 5, wherein the stem portion comprises one or more crush ribs extending from its outer surface in the lateral direction and configured to deform against the locator aperture.

7. The vehicle seat assembly of any one of claims 3 to 6, wherein the mounting arrangement comprises a housing bolthole defined by the sensor housing and a bracket bolthole defined by the sensor mounting bracket, wherein the housing bolthole and the bracket bolthole are aligned when the seat position sensor is mounted to the sensor mounting bracket.

8. The vehicle seat assembly of claim 7, wherein the housing bolthole and the bracket bolthole are both offset in the lateral direction away from the target side wall relative to the at least one locator aperture.

9. The vehicle seat assembly of any one of claims 2 to 8, wherein the sensor housing comprises a substantially flat contact surface which abuts against the underside of the sensor mounting bracket and comprises a plurality of spacer ribs extending between the sensor body and the contact surface to define the height of the sensor body relative to the sensor mounting bracket.

10. The vehicle seat assembly of claim 9, wherein the contact surface is defined by a plurality of contact ribs which protrude upwardly from a top wall of the sensor housing.

11. The vehicle seat assembly of any preceding claim, wherein the sensor mounting bracket comprises a sensor mounting plate to which the seat position sensor is mounted, and which extends along a substantially horizontal plane.

12. A vehicle comprising the vehicle seat assembly of any one of claims 1 to 11.

13. The vehicle of claim 12, further comprising:a deployable occupant restraint system located forward of the vehicle seat assembly; anda restraint system control module operatively connected to the seat position sensor and configured to control the deployable occupant restraint system in dependence on a position signal from the seat position sensor.

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