This invention is related to a mechanical torque generator (MTG) (11), the cost, the maintenance costs and the energy consumption of which have been minimized, as much as possible, since the reaction forces, the reaction moments and the frictional forces at the joints that connect the mechanism to the ground have been minimized as much as possible; which does not possess any actuators; and which can generate any desired torque variation. MTG (11) may be obtained by using 3 novel kinematic chains. By using these kinematic chains, it is also possible to obtain general purpose mechanisms, which have advantages similar to the MTG (11); which may include an actuator; which may generate relative rotational motion at a joint as any desired function of relative translational motion at another joint; which may be used in many different fields such as hydraulic and pneumatic machines, internal combustion engines and compressors.

To provide an expansion device and a movable body including a mechanism for quick deformation. An expansion device includes a main body and a limb portion attached to the main body, in which the limb portion includes a main link connected to the main body via a joint, an end link provided at a front end of the limb portion, at least one or more limb joints that are interposed between the main link and the end link and connect the main link and the end link, and a linear member of which both ends couple an end at the front end side of the limb portion of the end link and the main body and are retractable to one or both of the end link and the main body.

Provided is an actuator for a link mechanism for an internal combustion engine, which is capable of enhancing the durability of a wave gear type speed reducer or a bearing portion. The actuator for a link mechanism for an internal combustion engine according to the present invention includes: a housing including a bearing portion configured to support a control shaft so that the control shaft is rotatable; and the wave gear type speed reducer configured to reduce a rotation speed of an output shaft connected to a drive motor, and to transmit the reduced rotation speed to the control shaft. A restricting mechanism is provided to one of the control shaft and the housing, and is configured to restrict movement of the control shaft toward the wave gear type speed reducer side in an axial direction by being brought into contact with another of the control shaft and the housing.

Provided is an actuator for a link mechanism for an internal combustion engine, which is capable of enhancing the durability of a wave gear type speed reducer or a bearing portion. The actuator for a link mechanism for an internal combustion engine according to the present invention includes: a housing including a bearing portion configured to support a control shaft so that the control shaft is rotatable; and the wave gear type speed reducer configured to reduce a rotation speed of an output shaft connected to a drive motor, and to transmit the reduced rotation speed to the control shaft. A restricting mechanism is provided to one of the control shaft and the housing, and is configured to restrict movement of the control shaft toward the wave gear type speed reducer side in an axial direction by being brought into contact with another of the control shaft and the housing.

A supporting assembly for supporting a flexible screen and a display device is provided. The supporting assembly includes a first main body having a first limiting part and first guiding rod, a second main body having a second limiting part and second guiding rod, and a rod assembly. The rod assembly includes a first fixed end, a second fixed end, a second moving end, and a first moving end. The first fixed end is combined to the first limiting part to form a rotating shaft structure. The second fixed end is combined to the second limiting part to form a rotating shaft structure. The first moving end is slidingly coupled to the first guiding rod. The second moving end is slidably coupled to the second guiding rod. The supporting assembly can be expanded and contracted to meet the needs of size miniaturization, and further enlarging the size of the screen.

A supporting assembly for supporting a flexible screen and a display device is provided. The supporting assembly includes a first main body having a first limiting part and first guiding rod, a second main body having a second limiting part and second guiding rod, and a rod assembly. The rod assembly includes a first fixed end, a second fixed end, a second moving end, and a first moving end. The first fixed end is combined to the first limiting part to form a rotating shaft structure. The second fixed end is combined to the second limiting part to form a rotating shaft structure. The first moving end is slidingly coupled to the first guiding rod. The second moving end is slidably coupled to the second guiding rod. The supporting assembly can be expanded and contracted to meet the needs of size miniaturization, and further enlarging the size of the screen.

An assembly for converting motion comprises a first arm rotatable at a first position about a first fixed pivot; a second arm rotatable at a first position about a second fixed pivot; a third arm linked at a first position to the second arm at a second position on the second arm, the third arm being linked at a second position to the first arm at a second position on the first arm; wherein one of the first and second positions on the third arm is movable and the other of the first and second positions is fixed relative to the third arm; and a connecting arm extending between the first arm and the second arm, the connecting arm pivotably connected at a first position to a third position on the first arm and pivotably connected at a second position to the second position on the second arm.

A movable-side magnet is provided to a movable portion in a vacuum chamber. A drive unit is provided outside the vacuum chamber, and drives the movable portion by exerting magnetic force on the movable-side magnet. The drive unit has a first magnet, a second magnet, and a moving mechanism (moving member). The first magnet exerts magnetic force of attracting the movable-side magnet. The second magnet is provided to be adjacent to the first magnet, and exerts magnetic force of repelling the movable-side magnet. The moving mechanism integrally moves the first magnet and the second magnet.

A manipulator (110) for e.g. gait training is constructed from an Evans mechanism with an additional degree of freedom to provide a two dimensional workspace.

A manipulator (110) for e.g. gait training is constructed from an Evans mechanism with an additional degree of freedom to provide a two dimensional workspace.