A self-locking mechanism includes a frame (1), a transmission member (3), a rotating member (2), and a locking rod (4), forming a four-bar linkage mechanism. A supporting member (6) is movable relative to the frame (1). The rotating member (2) has an upper end rotatably connected with the supporting member (6), a lower end provided with a guide slot (22), and a middle portion therebetween. The transmission member (3) has two ends rotatably connected with the frame (1) and the middle portion respectively. The locking rod (4) has an upper end rotatably connected with the frame (1), and a lower end provided with a guide rod (41) movable in the guide slot. The locking rod (4) is rotatable between multiple positions. When the locking rod (4) is in a locking position, the guide rod (41) abuts against the guide slot to prevent the supporting member (6) from moving upward.

A self-locking mechanism includes a frame (1), a transmission member (3), a rotating member (2), and a locking rod (4), forming a four-bar linkage mechanism. A supporting member (6) is movable relative to the frame (1). The rotating member (2) has an upper end rotatably connected with the supporting member (6), a lower end provided with a guide slot (22), and a middle portion therebetween. The transmission member (3) has two ends rotatably connected with the frame (1) and the middle portion respectively. The locking rod (4) has an upper end rotatably connected with the frame (1), and a lower end provided with a guide rod (41) movable in the guide slot. The locking rod (4) is rotatable between multiple positions. When the locking rod (4) is in a locking position, the guide rod (41) abuts against the guide slot to prevent the supporting member (6) from moving upward.

A foldable seating accessory for a vehicle comprising a backrest assembly, a seat assembly, and a rear support. The backrest assembly is connected by a hinge joint to the seat assembly. The rear support is connected by a hinge joint to the backrest assembly. A trunk latch is connected to the seat assembly, allowing the seat assembly to secure onto the trunk of a vehicle. Other aspects are also described and claimed.

A foldable seating accessory for a vehicle comprising a backrest assembly, a seat assembly, and a rear support. The backrest assembly is connected by a hinge joint to the seat assembly. The rear support is connected by a hinge joint to the backrest assembly. A trunk latch is connected to the seat assembly, allowing the seat assembly to secure onto the trunk of a vehicle. Other aspects are also described and claimed.

A self-locking mechanism includes a frame (1), a transmission member (3), a rotating member (2), and a locking rod (4), forming a four-bar linkage mechanism. A supporting member (6) is movable relative to the frame (1). The rotating member (2) has an upper end rotatably connected with the supporting member (6), a lower end provided with a guide slot (22), and a middle portion therebetween. The transmission member (3) has two ends rotatably connected with the frame (1) and the middle portion respectively. The locking rod (4) has an upper end rotatably connected with the frame (1), and a lower end provided with a guide rod (41) movable in the guide slot. The locking rod (4) is rotatable between multiple positions. When the locking rod (4) is in a locking position, the guide rod (41) abuts against the guide slot to prevent the supporting member (6) from moving upward.

A self-locking mechanism includes a frame (1), a transmission member (3), a rotating member (2), and a locking rod (4), forming a four-bar linkage mechanism. A supporting member (6) is movable relative to the frame (1). The rotating member (2) has an upper end rotatably connected with the supporting member (6), a lower end provided with a guide slot (22), and a middle portion therebetween. The transmission member (3) has two ends rotatably connected with the frame (1) and the middle portion respectively. The locking rod (4) has an upper end rotatably connected with the frame (1), and a lower end provided with a guide rod (41) movable in the guide slot. The locking rod (4) is rotatable between multiple positions. When the locking rod (4) is in a locking position, the guide rod (41) abuts against the guide slot to prevent the supporting member (6) from moving upward.

A medical chair includes a base, a seat, and a leg rest pivotally mounted relative to the seat and adapted to move between an extended position and a retracted position. The chair further includes a first actuator for tilting the seat with respect to the base, a second actuator for lifting the seat with respect to the base, and a leg rest actuator adapted to move the leg rest. The chair also includes a controller adapted to control the first and second actuators to move the seat between a first position and a second position such that the seat is both lifted and tilted at the same time as the seat moves from the first position to the second position, and wherein the controller is adapted to control the leg rest actuator such that the leg rest maintains a substantially constant orientation with respect to the floor.

A medical chair includes a base, a seat, and a leg rest pivotally mounted relative to the seat and adapted to move between an extended position and a retracted position. The chair further includes a first actuator for tilting the seat with respect to the base, a second actuator for lifting the seat with respect to the base, and a leg rest actuator adapted to move the leg rest. The chair also includes a controller adapted to control the first and second actuators to move the seat between a first position and a second position such that the seat is both lifted and tilted at the same time as the seat moves from the first position to the second position, and wherein the controller is adapted to control the leg rest actuator such that the leg rest maintains a substantially constant orientation with respect to the floor.

A platform for lifting an individual from a fallen position is designed to be slid beneath the body of a user and transitions between a collapsed and an extended configuration. The extended configuration raises the individual to a seated position. The platform for lifting an individual has a base platform, a lifting platform, a folding wedge, a set of collapsible supports, and a lift-control assembly. The folding wedge is hingedly connected in between the base platform and the lifting platform so that the folding wedge forms a ramp, while in the collapsed configuration, that is slid beneath the body of the downed individual. The collapsible supports are connected in between the base platform and the lifting platform. The lift-control assembly is mounted in between the base platform and the lifting platform and generates the force required to transition the platform for lifting an individual between the extended and collapsed configurations.

The present disclosure discloses a multifunctional balance chair comprising a support portion, a seat portion, and a kneeling cushion portion. The seat portion is movably connected to the support portion, and an angle between the seat portion and the horizontal plane is controlled by relative movement between the seat portion and the support portion. The kneeling cushion portion is movably connected to the seat portion and connected to the support portion by a connecting mechanism. The kneeling cushion portion is movable between a first position aligned with the seat portion and a second position in which the kneeling cushion portion constitutes a balance chair cushion. The movement of the seat portion is linked to movement of the kneeling cushion portion.