Abstract: A cover for a vehicle roof, which may have a pane, an anti-splinter layer arranged on the inside face of the pane, and a lighting device having a luminous layer, wherein the luminous and anti-splinter layer forms both the anti-splinter layer and the luminous layer in this one layer and in particular the lighting device contains at least one luminous unit, which is designed to radiate light into the luminous and anti-splinter layer at a lateral edge region of the luminous and anti-splinter layer.

Abstract: A vehicle rear structure is applied to a vehicle, in which at least one of a roof and a rear window is capable of being accommodated in a vehicle body. The structure includes a deflection plate standing upright between a pair of seats on the rear side of the seats, and a light source provided on the lower front side of the deflection plate.

Abstract: A wind guiding device for an open-top passenger vehicle is disclosed. The wind guiding device has an inherently stiff, slat-shaped wind guiding element that can be adjusted between a retracted position and at least one wind guiding position relative to a windscreen frame. Several disruptive bodies are arranged on the underside of the wind guiding element.

Abstract: A cabin assembly may comprises a door assembly comprising an outer surface, an inner surface, and a seal. The cabin assembly may further comprise a cabin frame comprising hinge assemblies pivotably coupling the door assembly to the cabin frame and a seal surface defining an opening into the cabin frame. The seal surface may contact and compress the seal of the door when the door assembly is in a closed position. The seal surface may include an angled seal surface that is provided at an angle with respect to the inner surface of the door assembly. The angled seal surface may be located proximate to the hinge assemblies. The angled seal surface may prevent a portion, of the seal of the door, from being compressed above a threshold when the door assembly is in the closed position.

Abstract: Provided are protective drapes for e.g., vehicles, which drapes are configured such that they can be applied to an item (such as a vehicle), prior to or during a precipitation event in a manner such that when the drape is removed, precipitation is easily and efficiently removed from the item. Also provided are methods of protecting an item, and methods of removing precipitation from an item that include applying a protective drape in accordance with the present invention, to the item, and removing the protective drape from the item being protected, after at least a portion of the precipitation event. Further provided are kits that include a protective drape in accordance with the present invention, and instructions for applying and/or removing the protective drape from an item to be protected.

Abstract: The present invention is a powertrain for a hybrid vehicle, comprising a driving/receiving machine (20), a thermal engine (10) and engine shaft (12), a speed variation device (14) including an engine epicyclic gear train (24) with a sun gear (34) and a crown (42) which are each connected to the engine shaft (12) by an engine controlled coupling (26, 28) and to a fixed part (40) of the powertrain by a one-way automatic coupling (30, 32). A planet gear carrier (46) and a machine epicyclic gear train (60) are arranged on a shaft (62) substantially parallel to engine shaft (12). The planet gear carrier comprises a sun gear (64), a crown (72), a planet gear carrier (68) and an epicyclic gear train controlled coupling (88). The speed variation device (14) comprises a device (94) for connecting/disconnecting electric machine (20) with machine epicyclic gear train (60).

Abstract: An electronic control unit is configured to select one of a series mode, a series-parallel mode and a parallel mode as a running mode. A load level of a hybrid vehicle is set to a value that is high in the order of a load level at which the parallel mode is selected, a load level at which the series-parallel mode is selected, and a load level at which the series mode is selected. That is, the electronic control unit selects the series-parallel mode in an intermediate load region, selects the series mode in a low load region, and selects the parallel mode in a high load region.

Abstract: A drive device and method for a motor vehicle, provided with a combustion engine machine, with a first electric machine and with a second electric machine, wherein a drive shaft of the combustion engine machine can be coupled by a first clutch to a drive shaft of the first electric machine, which is connected via a transmission drive to a drive shaft of the drive device. At the same time, the gear device is permanently coupled to the drive shaft of the first electric machine and provided with a planetary gear that can be coupled by a second clutch to the drive shaft of an internal combustion engine, wherein the second electric machine is permanently coupled to the drive shaft.

Abstract: A drive device for a motor vehicle having a first drive assembly, a second drive assembly, and a planetary gear unit, via which the first drive assembly and the second drive assembly are operatively connected to a drivable axle of the motor vehicle. The first drive assembly and the drivable axle are operatively connected to the planetary gear unit. The second drive assembly as well as an auxiliary drive having an auxiliary assembly are operatively connected permanently to the planetary gear unit. The auxiliary drive has a third drive assembly, which is coupled at least intermittently to the auxiliary assembly.

Abstract: The present disclosure provides a transmission for a hybrid vehicle, including a main clutch and a sub-clutch which are disposed on a first input shaft and a second input shaft to selectively transfer power from an engine to an output shaft. First and second pairs of engine-side gears having different gear ratios are meshed with the sub-clutch and the output shaft and with the second input shaft and the output shaft, such that a pair of gears is selected. A third input shaft rotates using power received from a motor. A plurality of pairs of motor-side gears having different gear ratios are meshed with the third input shaft and the output shaft, such that a pair of gears appropriate to the speed of the vehicle is selected by a motor-side engaging/disengaging unit. A one-way clutch allows power to be only transferred from the third input shaft to the output shaft.

Abstract: A front module for a passenger vehicle is disclosed. The front module includes an adapter element via which a panel part of the front module is supported on a front module structure arranged behind it. An adjustable covering device of a cooling opening of a cooling device of the passenger vehicle is integrated into the adapter element.

Abstract: A working vehicle according to an embodiment includes an exhaust pipeline and a cover. The exhaust pipeline includes an exhaust gas purification device provided to stand on one of left and right sides of a running vehicle body. The cover is provided to cover at least a peripheral surface of the exhaust gas purification device of the exhaust pipeline and has an opening in a bottom thereof. The cover has a plurality of vent holes with a diameter less than that of the opening that are formed above the opening.

Abstract: The reaction force output device includes a drive source configured to output power to an operation portion in a direction opposite to an operating direction thereof; and a clutch mechanism interposed between the operation portion and the drive source and configured to connect and disconnect transmission of the power to the operation portion, wherein the clutch mechanism includes a first rotating body connected to the drive source side and to which the power of the drive source is transmitted, a second rotating body connected to the operation portion side, disposed coaxially with the first rotating body and configured to be relatively rotatable with respect to the first rotating body, a clutch lever rotatably supported by the first rotating body, and a plurality of engagement portions disposed at the second rotating body in a circumferential direction thereof and engaged with the clutch lever.

Abstract: A control method for improving fuel efficiency in an adaptive cruise control system includes: setting a target velocity profile based on a current velocity and position when a vehicle is driven by the adaptive cruise control system; determining, by the controller, whether the preceding vehicle exists while driving by the target velocity profile; comparing, by the controller, a minimum distance for preventing a collision between the preceding vehicle and the following vehicle in a case of applying the target velocity profile with a first distance between the preceding vehicle and the following vehicle when the preceding vehicle exists; and performing, by the controller, fuel efficiency driving of the following vehicle when the minimum distance is larger than the first distance and performing driving of the following vehicle according to the target velocity profile when the minimum distance is smaller than the first distance.

Abstract: A device for remotely changing the control of power generated by an internal combustion engine of a recreational vehicle driven by a driver controlling an accelerator pedal. The device includes a remote control, sending a signal for modulating the power and/or speed of the engine. The device comprises a system for measuring the position of the accelerator pedal, a system for receiving the signal for modulating the power and/or speed, a system for controlling the intake of gases into the engine, and an electronics module connected to the various systems, establishing rules for controlling the intake control system, depending on the position of the accelerator pedal and the received modulation signal.

Abstract: An ego-vehicle for displaying a behavior of a target object in a spatio-temporal manner may include one or more processors. One or more memory modules are communicatively coupled to the one or more processors. A display is communicatively coupled to the one or more processors. One or more sensors are communicatively coupled to the one or more processors. Machine readable instructions are stored in the one or more memory modules and cause the one or more processors to display on the display an object indicator associated with a position of a target object relative to the ego-vehicle, wherein the object indicator depicts a spatio-temporal patterning indicating the behavior of the target object.

Abstract: An information display system for a vehicle is provided. The information display system includes a steering wheel including a ring portion and a upper opening region within the ring portion, an instrument cluster arrangement positioned forward of the steering wheel and including one or more gauges positioned such that at least a portion of the one or more gauges is visible through the upper opening region of the steering wheel, a holder configured to receive a handheld device, the holder being positioned adjacent to the one or more gauges such that the handheld device being placed on the holder is visible through the upper opening region, and an electronic control unit configured to communicate with the handheld device positioned in the holder to display information associated with the vehicle on the handheld device.

Abstract: The head-up display apparatus includes a displaying device installed inside an instrument panel, an opening portion formed in the instrument panel, and a combiner disposed above the opening portion. An image of the displaying device is projected to the combiner through the opening portion. The displaying device is a segment display. The segment display includes a plurality of light sources and a character/symbol plate having a plurality of image informing parts. The combiner is made of a non-translucent dark plate or a semi-translucent dark smoke plate.

Abstract: A system and method displays information using a vehicle-mount computer. The system includes (i) an input device and a display device for inputting and displaying information; (ii) a motion detector for detecting vehicle motion; (iii) a proximity sensor for detecting proximity to an item; and (vi) a vehicle-mount computer in communication with the input device, the display device, the motion detector, and the proximity sensor, the vehicle-mount computer including a central processing unit and memory. The vehicle-mount computer's central processing unit is configured to store information associated with user-selected information from the input device and to display a zoomed view of the user-selected information on the display device. Further, the vehicle-mount computer's central processing unit is configured to override screen-blanking when user-selected information is displayed.

Abstract: The present invention includes methods, circuits, devices, systems and associated computer executable code for providing driver decision making support. According to some embodiments, there may be provided a driver decision support system, which may generate action recommendations to a commercial driver, such as a taxi driver, a cab driver, a limo driver or any other kind of driver who picks up and transports passengers or cargo on an ad hoc (or otherwise flexible/uncertain) basis.

Abstract: A plug-in vehicle is provided which prevents impossibility of driving even when a charging connector is not connected to the vehicle and a method of controlling the same. The method includes determining whether the vehicle is stopped and determining whether recognition of a connection of the charging connector to the vehicle is enabled. Additionally, the method includes determining whether a charging inlet door is open or closed, in response to determining that recognition of the connection of the charging connector to the vehicle is disenabled, and executing transition of the vehicle from a first state restricting generation of driving power to a second state permitting generation of driving power when the charging inlet door is closed.

Abstract: A wireless power transfer (WPT) method based on a state of an auxiliary battery and an electric vehicle (EV) for the same includes receiving, by an EV charging apparatus, a wireless jump start request message from a user terminal; transmitting, by the EV charging apparatus, a primary jump start power according to the wireless jump start request message to the EV; driving an auxiliary power supply device provided in the EV by a secondary jump start power induced by the primary jump start power; driving a controller of the EV based on a preset power outputted from the auxiliary power supply device; and charging, by the controller of the EV, an auxiliary battery of the EV.

Abstract: An apparatus comprises a power electronic energy conversion system comprising a first energy storage device configured to store DC energy and a first voltage converter configured to convert a second voltage from a remote power supply into a first charging voltage configured to charge the first energy storage device. The apparatus also includes a first controller configured to control the first voltage converter to convert the second voltage into the first charging voltage and to provide the first charging voltage to the first energy storage device during a charging mode of operation and communicate with a second controller located remotely from the power electronic energy conversion system to cause a second charging voltage to be provided to the first energy storage device during the charging mode of operation to rapidly charge the first energy storage device.

Abstract: In a case where an external charging start time is set in an external charging timer when a charging plug is connected to a charging connector, a charging controller is configured to perform standby setting of external charging before the external charging start time and transits to a pause state. The charging controller is intermittently activated during a timer charging setting period from a pause period start time when transition is made to the pause state to the external charging start time, and when a battery temperature at the time of activation of the charging controller is equal to or lower than a predetermined temperature, execute a temperature increase mode in which a heater is operated to increase the temperature of a main battery.

Abstract: A high-voltage battery for a motor vehicle, the operating voltage of which is greater than 12 V, in particular, greater than 50 V, having two power connections at a high-voltage network power system of the motor vehicle, which can be connected without voltage through first safety contactors provided inside a housing of the high-voltage battery, and storage cells for electrical energy that are connected to the power connections via the first safety contactors. The high-voltage battery additionally has two charging terminals, which are connected to the storage cells by circumventing the first safety contactors by way of charging lines.

Abstract: An in-cable control box (ICCB) mounted on an electric vehicle (EV) charging cable, which performs conductive charging for an EV as connected to a power outlet and an inlet of the EV, includes at least one processor, a first communication module, a second communication module, and a memory storing instructions executed by the at least one processor. Also, the instructions are configured to cause the first communication module to collect information on an EV by communicating with an electric vehicle communication controller (EVCC) of the EV; and cause the second communication module to transmit the information on the EV to a supply equipment communication controller (SECC). As such, it is possible to charge the EV in an economical manner as compared to a standard defining conductive charging process.

Abstract: The invention relates to a device and a method for automatically charging an electrical energy storage means in a vehicle. For this purpose, firstly, the position of a charging socket on a vehicle is determined, based on vehicle-specific data. Subsequently, a charging robot travels on the ground near to the charging socket. Then, the charging robot establishes a galvanic connection between the charging station and charging socket. For this purpose, the charging robot introduces a contact head connected to the charging station into the charging socket of the vehicle. After termination of the charging process, the contact head is removed from the charging socket, thereby releasing the vehicle.

Abstract: A charging system for autonomous transport vehicles including at least one charging contact disposed on each pick floor level of a storage and retrieval system, each of the at least one charging contact being located at a transfer station, at least one power supply configured to supply power to the at least one charging contact, and a controller in communication with the transfer station and being configured to communicate information relating to a transfer of items between the transfer station and a predetermined one of the autonomous transport vehicles and to apply power from the power supply to the at least one charging contact for charging the predetermined autonomous transport vehicle corresponding to the transfer and located at the transfer station, wherein the controller is configured to supply power to the charging contacts simultaneously with the predetermined autonomous transport vehicle exchanging items related to the transfer at the transfer station.

Abstract: An electric vehicle charging station charging electric vehicles dynamically responds to power limit messages. The charging station includes a charging port that is configured to electrically connect to an electric vehicle to provide power to charge that electric vehicle. The charging station also includes a power control unit coupled with the charging port, the power control unit configured to control an amount of power provided through the charging port. The charging station also includes a set of one or more charging station control modules that are configured to, in response to receipt of a message that indicates a request to limit an amount of power to an identified percentage and based on a history of power provided through the charging port over a period of time, cause the power control unit to limit the power provided through the charging port to the identified percentage.

Abstract: A matrix-type flexible charging pile and a charging method capable of dynamically allocating power are disclosed in the present invention, and the method comprises the steps of: S1, connecting each charging terminal to a corresponding electric vehicle; S2, receiving a charging power demand of the electric vehicle and comparing the charging power demand; S3, calculating the number of charging modules required to be additionally allocated to the present DC-bus and delivering it to a matrix controller; and S4, allocating the required number of charging modules in a dynamic power region to the corresponding DC bus and switching the module communication line to a corresponding communication bus synchronously. The implementation of the charging method capable of dynamically allocating power can satisfy the electric vehicle charging demands for different energy storage capacities and different charging rates, as well as improve the conversion efficiency and the utilization rate of the charging device further.

Abstract: Dynamic allocation of power modules for charging electric vehicles is described herein. The charging system includes multiple dispensers that each include one or more power modules that can supply power to any one of the dispensers at a time. A dispenser includes a first power bus that is switchably connected to one or more local power modules and switchably connected to one or more power modules located remotely in another dispenser. The one or more local power modules are switchably connected to a second power bus in the other dispenser. The dispenser includes a control unit that is to cause the local power modules and the remote power modules to switchably connect and disconnect from the first power bus to dynamically allocate the power modules between the dispenser and the other dispenser.

Abstract: Embodiments of the present invention provide a method and a device for detecting SOC of a battery. The method for detecting SOC of a battery includes: determining an initial SOC value of the battery according to a waiting time of the battery; calculating a current SOC value of the battery based on the initial SOC value and a current working current of the battery, denoting as a first SOC value. In embodiments of the present invention, the current of the battery is real-time measured and the SOC value of the battery is calculated by accumulating the current of the battery, in addition, the initial SOC value is calibrated by the waiting time, so that the error of the SOC detection result is reduced, thereby increasing accuracy of the SOC detection result.

Abstract: A method for setting at least one aging-influencing operating parameter of batteries for motor vehicles includes assigning batteries to a fleet of batteries; recording at least one characteristic variable for an aging state of batteries of at least one selection of batteries from the fleet of batteries; determining at least one aging state of the at least one selection of batteries or the fleet of batteries on the basis of the at least one characteristic variable recorded in the case of the selection of batteries; and setting the at least one operating parameter in dependence on the determined aging state of the at least one selection of batteries or the fleet of batteries for controlling the aging state in the case of at least one battery to be controlled of the at least one selection of batteries, a further selection of batteries, or the fleet of batteries.

Abstract: A vehicle includes a refrigerant system having a chiller and a coolant system having a chiller loop and a radiator loop. The chiller loop is arranged to circulate coolant through the chiller, and the radiator loop is arranged to circulate coolant through a battery, a radiator, and a bypass valve connected to a bypass conduit. A controller is configured to, in response to an ambient-air temperature exceeding a battery-coolant temperature, actuate the valve to circulate coolant to the bypass conduit to skip the radiator.

Abstract: A bicycle battery unit is configured to reduce the effect of contact with an obstacle. The bicycle battery unit includes a plurality batteries, a housing accommodating the batteries and a protector. The protector is integrally provided on at least a portion of the outer surface of the housing. The protector has a lower hardness than a hardness of the housing.

Abstract: An autonomous ground treatment appliance, in particular a robotic lawnmower, includes a housing, a running gear, a control unit, at least one wheel unit, and a sensor unit. The control unit is configured to control the autonomous ground treatment appliance. The at least one wheel unit is mounted on the housing so as to be at least partially movable relative to the housing. The sensor unit is configured to ascertain a position of the wheel unit relative to the housing.

Abstract: In a motor vehicle, an accelerator operation amount is changed among a first region, a second region, and a third region. The motor vehicle is configured to perform a first control that applies a braking force to the vehicle when the accelerator operation amount is at least in the first region or in the second region or to perform a second control that applies a smaller braking force to the vehicle than the braking force applied by the first control when the accelerator operation amount is in the first region or in the second region. The motor vehicle is also configured to continue execution of the first control without changing over control to the second control, when an execution request for the second control is given during execution of the first control in the second region of the accelerator operation amount.

Abstract: A method for operating an electrically operated or also electrically operable motor vehicle provided with a rechargeable electric energy storage device associated with the drive motor of the motor vehicle. A target charging state is determined for the energy storage device and an operating strategy is determined for a route that is calculated, entered or predicted for the next trip, by which recuperative deceleration is enabled with a specifiable minimum amount for deceleration processes occurring along the route. A total mass of the motor vehicle, including optionally a trailer connected to the motor vehicle, deviating from an input normal value and an air resistance of the motor vehicle deviating from a predetermined normal value are taken into account.

Abstract: The present invention relates to a method for adjusting at least a first movable seat element (2) of a vehicle seat 1, in which a graphic element (10) of the vehicle seat (1) to be adjusted is displayed with at least one graphic element (20) of the first seat element (2) on a display surface (13), in order to adjust the first seat element a first switching element and a second switching element are displayed on the display surface (13), wherein the first switching element comprises a first graphic arrow element (21) and the second switching element comprises a second graphic arrow element (22), which graphic arrow elements distinguish opposite directions for moving the first seat element (2), and on actuating the first switching element (21) a control signal is generated, by means of which the first seat element (2) is moved in a first direction (A) and, at the same time, the graphic element (20) of the first seat element (2) is moved.

Abstract: A vehicle seat is provided. The vehicle seat comprises construction elements that are movable relative to one another and at least one force transmission element which transmits activation forces and/or stress forces that result from the use of the vehicle seat from one construction element to the other. The force transmission element by way of at least one joint is connected to both construction elements, and conjointly with the at least one joint is an integral component part of at least one of the two construction elements.

Abstract: A seat sliding apparatus for a vehicle includes a lower rail, an upper rail supported to be movable relative to the lower rail, and a pressing member attached to one of the lower rail and the upper rail via a biasing member. The pressing member constantly presses the other of the lower rail and the upper rail by a biasing force of the biasing member. The lower rail and the upper rail extend in a first direction. The pressing member obliquely presses the other of the lower rail and the upper rail so that force components are generated in both the first direction and in a second direction orthogonal to the first direction.

Abstract: The present invention discloses a latch for securing a seatback to an elevated rear wall of a vehicle passenger compartment, and in which a striker having a crosswise engaging portion extends rearwardly from the seatback. The latch includes a fixed sector adapted to being mounted to the rear wall. A hook is pivotally supported to the sector, with a slide plate sandwiching the hook between the slide plate and the fixed sector such that upward displacement of the slide plate causes forward pivoting of the hook. Rearward pressing of the seatback and striker causes rearward rotation of the hook to receive the striker, the slide plate being upwardly displaced to cause forward rotation of the hook to disengage the striker.

Abstract: A seat frame is disclosed for a height-adjustable and tiltable seat pan of a motor vehicle seat. The seat frame has two side rails, a first cross bar, a second cross bar, and a drive unit. The first cross bar is supported in the two side rails and the second cross bar serves to support the seat pan. The second cross bar is mounted so as to be rotatable about fixed first axis in the two side rails. The second cross bar is rotated by the drive unit. The drive unit has an actuating motor and an actuator that is displaceable via the actuating motor and connected to the second cross bar outside the first axis. The drive unit is mounted on the first cross bar and rotatable about a second axis of the first cross bar which is fixed in the two side rails.

Abstract: Disclosed herein is a pumping apparatus for a vehicle seat, which includes an input member rotated by torque input from a handle lever, a clutch unit configured to transmit the input torque to a link mechanism of a seat cushion, a brake unit configured to cut off the torque input in reverse from the link mechanism, a housing accommodating the clutch unit therein, and a fixing member coupled to a rear end of the housing, wherein the input member includes a first input member disposed in front of the housing, and a second input member connected to the first input member and accommodated in the housing, and the clutch unit includes a torque transmission member arranged on an outer peripheral surface of the second input member, and an annular control member having a clutch friction surface formed on an inner peripheral surface thereof.

Abstract: A motor vehicle seat includes a reclining or pivotable backrest, on which an electrical load is arranged and a transmission device for transmitting signals and/or power between the electrical load and a vehicle-side device. Signals and/or power can be contactlessly transmitted by the transmission device.

Abstract: Disclosed herein is a reclining device for a vehicle seat, which includes a plate holder, a sector tooth rotatably inserted into the plate holder, a pawl tooth engaged with the sector tooth, an operating cam to move the pawl tooth by rotation thereof to fix the sector tooth, a guide bush press-coupled to the operating cam and having a sealing protrusion to support a cam spring, a hollow operation shaft to rotate the operating cam, and the cam spring to restore the operating cam rotated by the operation shaft. Thus, it is possible to prevent a solution for an electrodeposition from infiltrating into the reclining device, to secure a space in which the cam spring is smoothly operated, and to contribute to a reduction in weight by use of the hollow shaft.

Abstract: A child safety seat includes a seat shell, an extension member and a foot. The seat shell has a bottom surface capable of resting stably on a vehicle seat. The extension member is connected with the seat shell, and is configurable between a first position where a forward end of the extension member extends forward from a front end of the seat shell, and a second position where the extension member is retracted toward the seat shell. The foot is connected with the seat shell and is disposed adjacent to the bottom surface of the seat shell, the foot being movably linked to the extension member. The foot and the seat shell are movable relative to each other to adjust the seat shell between at least a first and a second angular position, the second angular position being reclined rearward relative to the first angular position.

Abstract: A child safety seat includes a seat shell, an extension member connected with the seat shell, and a front and a rear foot respectively connected with the seat shell and movably linked to the extension member. The seat shell has a bottom surface capable of resting on a vehicle seat. The extension member is movable between a first position where a forward end of the extension member extends forward from the front end of the seat shell, and a second position where the extension member is retracted toward the seat shell. The front foot and the rear foot are movable relative to the seat shell to adjust the seat shell between a first and a second angular position, the seat shell being in the first and second angular position when the extension member is respectively in the first and second position.

Abstract: A child safety seat includes a seat shell and an extension member. The seat shell has a seat portion and a backrest, the seat portion having a front end opposite to the backrest. The extension member is pivotally connected with the seat shell, and is rotatable relative to the seat shell between a retracted position where the extension member is stowed in the seat shell and a deployed position where the extension member deploys forward beyond the front end of the seat shell to expand a leg room at a front of the child safety seat.

Abstract: A child safety seat includes a shell having a seat portion and a backrest, and a seat board assembled with the shell, the seat board being disposed on the seat portion so that a child placed in the child safety seat sits on the seat board, the seat board being slidable relative to the shell toward or away from the backrest. The seat board can be thereby configurable as an extension member that is movable relative to the shell for adjusting a leg room for a child sitting on the seat board.