Right and left brackets coupling a seat back frame and seat cushion frame together are configured to adjust an amount of deformation upon impact absorption. A vehicle seat frame includes a seat cushion frame, seat back frame, coupling bracket configured to couple a cushion side frame as a side frame of the seat cushion frame on one side of the vehicle seat frame and a seat back side frame as a side frame of the seat back frame on the one side, and coupling bracket configured to couple a cushion side frame as a side frame of the seat cushion frame on the other side and a seat back side frame as a side frame of the seat back frame on the other side. Deformability upon impact absorption is different between a weak portion provided at the coupling bracket and a weak portion provided at the coupling bracket.

A vehicle seat includes: a bracket; and a seat frame that is mounted on the bracket through coupling member. The bracket has main body, and upright wall extending upward from the main body and coupled to the main body. The coupling member is mounted at one end on the upright wall with fastening member. The main body is provided with interference avoiding portion that prevents interference with protruding portion of the fastening member protruding from the upright wall toward the main body.

The specification and drawings present a new apparatus and method for providing an accurate and convenient weighing of a vehicle occupant using a relocatable/replaceable multi-purpose on-board vehicle occupant weighing (REMBOW) methodology including a REMBOW pad mounted on a REMBOW seat frame in a vehicle to improve safe engagement of an air bag as well as raising and monitoring possible health related issues of the vehicle occupant(s). The occupant weighing can be performed, using, as a non-limiting example, a kemoder elimination of a separate occupant's feet weighing (KEF) technology, where kemoder is a key element for moderating of an accuracy and convenience of an occupant weighing (i.e., a weighing moderator) and for starting a measuring process.

A vehicle passenger detection apparatus is configured to monitor an occurrence of a passenger entering into a vehicle from a vacant seat state or an occurrence of the vacant seat state due to the passenger exiting from the vehicle, and to determine by calculations whether a detection value of a load sensor is stable before the passenger entered the vehicle or after the passenger exited the vehicle. Updating of a passenger determination result is executed even in a state in which a determination result from a vibration change amount judgment section indicates a disturbance has occurred, when the vehicle entry and exit determination section determines that the detection value of the load sensor is stable before the passenger entered the vehicle or after the passenger exited the vehicle.

A passenger detection device includes: an input unit that receives a captured image of an interior space of a vehicle imaged by an imaging device and a load measured by a load sensor provided on a seat provided in the interior space of the vehicle; a determination unit that determines that a passenger is seated on the seat, in a case where the load is equal to or more than a predetermined threshold value; a detection unit that obtains a face determination degree indicating a certainty of a face of the passenger in the captured image from the captured image; and a threshold value changing unit that changes the threshold value according to the face determination degree.

A vehicle seat includes a load sensor for measuring a load applied from an occupant and a seat cushion frame, wherein the seat cushion frame comprises right and left side frames extending in a front-and-rear direction, the load sensor is attached to the seat cushion frame, and a concave portion is formed in at least one of the right and left side frames at a position opposite to the load sensor.

A pinching detection apparatus of a vehicle seat includes: a reverse load determining unit that determines whether or not a vehicle seat is in a reverse load state in which the vehicle seat is lifted upward based on a seat load detected by a load sensor provided on a lower side of the vehicle seat; and a pinching determining unit that determines that a foreign material is pinched on the lower side of the vehicle seat when determining that the vehicle seat is continuously in the reverse load state.

A deformation detection sensor which combines a magnetic resin dispersing a magnetic filler in a resin with a magnetic sensor, of which stability of detection property is highly enhanced. The deformation detection sensor comprises a magnetic resin-containing polymer foam which comprises a magnetic resin, in which a magnetic filler is contained, and a polymer foam in which the magnetic resin is included, and a magnetic sensor that detects a magnetic change caused by a deformation of the magnetic resin-containing polymer foam, wherein the magnetic resin has an elastic modulus of 0.1 to 10 MPa, and a production thereof.

To provide a seat system that allows the information of the user seated in the seat to be acquired by another user, a seat system includes: a seat main body; at least one sensor provided in the seat main body; a control device for processing a signal from the sensor; and a first user interface communicating with the control device and notifying information based on a signal from the control device. Preferably, the sensor acquires information obtained from a seated person who is seated on the seat main body. Preferably, the seat system includes a camera for capturing an image of the seated person who is seated on the seat main body, and the control device causes the first user interface to display the image captured by the camera.

To provide a sensor unit that can be easily attached to and detached from a seat in which a seated occupant is seated, and a seat equipped with a sensor unit. A sensor unit includes a sensor module including a biological sensor that detects a biological signal of a seated occupant, and a wireless communication unit that is connected to the biological sensor to wirelessly transmit the detected biological signal to an outside; and a sensor holder that holds the sensor module. The sensor holder includes a seat attachment portion detachably attached to an attached portion that is provided in a front surface of a seat cushion at a position at which the seated occupant is abuttable against the attached portion.